ALEX Lesson Plans
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Title: Number Carousel
Description:
First grade students will be able to use various strategies and their understanding of addition to make 10 and 17 in multiple ways. Lesson will help students use 2 or 3 different numbers to make 10 or use 2 or 3 different numbers to create numbers up to 20.
This is a College and CareerReady Standards showcase lesson plan.
Standard(s): [MA2013] (1) 2: Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. [1OA2]
Subject: Mathematics (1)
Title: Number Carousel
Description: First grade students will be able to use various strategies and their understanding of addition to make 10 and 17 in multiple ways. Lesson will help students use 2 or 3 different numbers to make 10 or use 2 or 3 different numbers to create numbers up to 20.
This is a College and CareerReady Standards showcase lesson plan.
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Title: Where Oh Where Has My Addend Gone?
Description:
Students will use number bonds and counters as a strategy for finding the missing addend. Students will become aware of the relationship between addition and subtraction. They will also use counting as it is related to addition and subtraction.
This is a College and CareerReady Standards showcase lesson plan.
Standard(s): [MA2013] (1) 8: Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. [1OA8]
Subject: Mathematics (1)
Title: Where Oh Where Has My Addend Gone?
Description: Students will use number bonds and counters as a strategy for finding the missing addend. Students will become aware of the relationship between addition and subtraction. They will also use counting as it is related to addition and subtraction.
This is a College and CareerReady Standards showcase lesson plan.
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Title: Adding with the Associative Property
Description:
Students will learn ways to add using the associative property of addition. Students will view a PowerPoint presentation to introduce associative property of addition.
Standard(s): [TC2] (02) 7: Use digital tools to access and retrieve information.
Subject: Mathematics (1), or Technology Education (K  2)
Title: Adding with the Associative Property
Description: Students will learn ways to add using the associative property of addition. Students will view a PowerPoint presentation to introduce associative property of addition.
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Title: Camp Add "Em Up II
Description:
At Camp Add ‘Em Up it’s time to or “2” find patterns in the environment. Students will work in pairs as they build understanding of how to count by 2’s. Students will use digital cameras to capture “2’s” in their classroom (2 shoes, 2 hands, 2 feet, 2 eyes, etc.). Students will create patterns of 2’s using paper blocks and/or Unifix cubes. Students will demonstrate their understanding of 2’s and their creativity by creating a PhotoStory of found or created pairs. Students will also use a 100’s chart and look for visual patterns.
Standard(s): [LOE] ML (02) 5: Recite a variety of highfrequency learned words, phrases, and sentences in the target language, imitating correct and appropriate intonation and pronunciation.
Subject: Languages Other Than English (Foreign Languages) (K  2), or Mathematics (1)
Title: Camp Add "Em Up II
Description: At Camp Add ‘Em Up it’s time to or “2” find patterns in the environment. Students will work in pairs as they build understanding of how to count by 2’s. Students will use digital cameras to capture “2’s” in their classroom (2 shoes, 2 hands, 2 feet, 2 eyes, etc.). Students will create patterns of 2’s using paper blocks and/or Unifix cubes. Students will demonstrate their understanding of 2’s and their creativity by creating a PhotoStory of found or created pairs. Students will also use a 100’s chart and look for visual patterns.
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Title: Stop, Look, and Find Shapes in Our School and Community!
Description:
This is a projectbased lesson that provides many handson opportunities for students to learn about shapes in their environment. Students are challenged to find shapes in our world using everyday technology. Students review the characteristics of basic shapes such as squares, triangles, circles, etc. They will then learn how to use digital cameras to capture shapes in the environment and will create a digital book of their photos.
Standard(s): [MA2013] (2) 26: Partition circles and rectangles into two, three, or four equal shares; describe the shares using the words halves, thirds, half of, a third of, etc.; and describe the whole as two halves, three thirds, or four fourths. Recognize that equal shares of identical wholes need not have the same shape. [2G3]
Subject: Mathematics (K  2), or Technology Education (K  2)
Title: Stop, Look, and Find Shapes in Our School and Community!
Description: This is a projectbased lesson that provides many handson opportunities for students to learn about shapes in their environment. Students are challenged to find shapes in our world using everyday technology. Students review the characteristics of basic shapes such as squares, triangles, circles, etc. They will then learn how to use digital cameras to capture shapes in the environment and will create a digital book of their photos.
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Title: Cookie Jar Subtraction
Description:
In this language development subtraction lesson English Language Learners will learn and practice using vocabulary and sentence structures for subtraction. The lesson incorporates technology, handson manipulatives, and multiple opportunities for interaction to engage students in the math content. The format follows the Sheltered English Instructional Protocol (SIOP).
Standard(s): [MA2013] (1) 18: Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. [1MD4]
Subject: Mathematics (1)
Title: Cookie Jar Subtraction
Description: In this language development subtraction lesson English Language Learners will learn and practice using vocabulary and sentence structures for subtraction. The lesson incorporates technology, handson manipulatives, and multiple opportunities for interaction to engage students in the math content. The format follows the Sheltered English Instructional Protocol (SIOP).
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Title: You Can Add!
Description:
Students will learn ways to add using the associative property of addition. Students will view a PowerPoint presentation to introduce associative property of addition.
Standard(s): [MA2013] (1) 7: Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. [1OA7]
Subject: Mathematics (1), or Technology Education (K  2)
Title: You Can Add!
Description: Students will learn ways to add using the associative property of addition. Students will view a PowerPoint presentation to introduce associative property of addition.
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Title: How Many Times Did You Add That?
Description:
After watching the video clip of the Hershey's plant, students will use grid paper to investigate multiplication as repeated addition.
This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.
Standard(s): [SS2010] LWT2 (2) 7: Explain production and distribution processes.
Subject: Mathematics (1  4), or Social Studies (2)
Title: How Many Times Did You Add That?
Description: After watching the video clip of the Hershey's plant, students will use grid paper to investigate multiplication as repeated addition.
This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.
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Title: Show Me the Money
Description:
In this lesson, students identify coins, describe their attributes, learn their value, and count like coins. Students view an interactive web lesson that provides practice. Concepts are taught using songs, poems and games.
This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.
Standard(s): [MA2013] (2) 21: Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. [2MD8]
Subject: Mathematics (K  2)
Title: Show Me the Money
Description: In this lesson, students identify coins, describe their attributes, learn their value, and count like coins. Students view an interactive web lesson that provides practice. Concepts are taught using songs, poems and games.
This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.
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Title: "No More Money Trouble"
Description:
This lesson will allow students to identify and count money. They will enjoy playing with coins that look like real money. This lesson is guaranteed to motivate students through the use of handson and cooperative group activities. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.
Standard(s): [MA2013] (3) 11: Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. [3NBT2]
Subject: English Language Arts (2), or Mathematics (K  3), or Technology Education (K  2)
Title: "No More Money Trouble"
Description: This lesson will allow students to identify and count money. They will enjoy playing with coins that look like real money. This lesson is guaranteed to motivate students through the use of handson and cooperative group activities. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.
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Title: Multiplication Facts, Facts, Facts and Some Reese's Pieces for Snack!!
Description:
This lesson teaches the basic math multiplication facts in a fun way so that students will want to remember them. Knowledge of all multiplication facts will help with learning subsequent skills in longer multiplication, division, fractions, etc.
Standard(s): [MA2013] (3) 5: Apply properties of operations as strategies to multiply and divide. (Students need not use formal terms for these properties.) [3OA5]
Subject: Mathematics (1  3), or Technology Education (3  5)
Title: Multiplication Facts, Facts, Facts and Some Reese's Pieces for Snack!!
Description: This lesson teaches the basic math multiplication facts in a fun way so that students will want to remember them. Knowledge of all multiplication facts will help with learning subsequent skills in longer multiplication, division, fractions, etc.
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Title: Hundred Blocks Board
Description:
In this lesson students will practice adding, subtracting, and multiplying without regrouping using a hundred blocks board. Students will be given opportunities to identify and discuss different patterns that they discover and relate number patterns to visual patterns.
Standard(s): [MA2013] (3) 9: Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. [3OA9]
Subject: Mathematics (K  3), or Technology Education (K  2)
Title: Hundred Blocks Board
Description: In this lesson students will practice adding, subtracting, and multiplying without regrouping using a hundred blocks board. Students will be given opportunities to identify and discuss different patterns that they discover and relate number patterns to visual patterns.
Thinkfinity Lesson Plans
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Title: Begin with Buttons: Looking Back and Moving Forward
Description:
In this lesson, one of a multipart unit from Illuminations, students review the work of the previous lessons through a variety of activity stations, one of which involves using an interactive Web site. Students model with buttons and record addition and subtraction.
Standard(s): [MA2013] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1OA5]
Subject: Mathematics Title: Begin with Buttons: Looking Back and Moving Forward
Description: In this lesson, one of a multipart unit from Illuminations, students review the work of the previous lessons through a variety of activity stations, one of which involves using an interactive Web site. Students model with buttons and record addition and subtraction. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Sum Search
Description:
In this lesson, one of a multipart unit from Illuminations, students practice addition facts in a concentrationgame format using dominoes. Then, they generate sums to given numbers using a calculator and record them on a hundred board and look for patterns. Later, they record their current level of additionfact mastery on an addition table.
Standard(s): [MA2013] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1OA5]
Subject: Mathematics Title: Sum Search
Description: In this lesson, one of a multipart unit from Illuminations, students practice addition facts in a concentrationgame format using dominoes. Then, they generate sums to given numbers using a calculator and record them on a hundred board and look for patterns. Later, they record their current level of additionfact mastery on an addition table. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: What Balances?
Description:
In this lesson, one of a multipart unit from Illuminations, students explore subtraction using a pan balance. They use subtraction facts to generate related addition facts and explore at the concrete level the idea of subtraction as the inverse of addition.
Standard(s): [MA2013] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1OA5]
Subject: Mathematics Title: What Balances?
Description: In this lesson, one of a multipart unit from Illuminations, students explore subtraction using a pan balance. They use subtraction facts to generate related addition facts and explore at the concrete level the idea of subtraction as the inverse of addition. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Finding the Balance
Description:
In this lesson, one of a multipart unit from Illuminations, students explore another model of subtraction, the balance. Students also explore recording the modeled subtraction facts and the related addition facts in equation form.
Standard(s): [MA2013] (1) 7: Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. [1OA7]
Subject: Mathematics Title: Finding the Balance
Description: In this lesson, one of a multipart unit from Illuminations, students explore another model of subtraction, the balance. Students also explore recording the modeled subtraction facts and the related addition facts in equation form. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Counting Back and Counting On
Description:
In this lesson, one of a multipart unit from Illuminations, students model subtraction with connecting cubes while the teacher reads to them from counting books. Then, students make a train of connecting cubes and write in vertical and horizontal format the differences suggested by adding to and subtracting from the train, one cube at a time. Finally, students record in their learning portfolio for the unit a train showing one cube being taken away and record the difference in vertical and horizontal format. Several pieces of literature appropriate for use with this lesson are suggested.
Standard(s): [MA2013] (1) 18: Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. [1MD4]
Subject: Language Arts,Mathematics Title: Counting Back and Counting On
Description: In this lesson, one of a multipart unit from Illuminations, students model subtraction with connecting cubes while the teacher reads to them from counting books. Then, students make a train of connecting cubes and write in vertical and horizontal format the differences suggested by adding to and subtracting from the train, one cube at a time. Finally, students record in their learning portfolio for the unit a train showing one cube being taken away and record the difference in vertical and horizontal format. Several pieces of literature appropriate for use with this lesson are suggested. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: How Many More?
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In this lesson, one of a multipart unit from Illuminations, students write subtraction problems, model them with sets of fishshaped crackers, and communicate their findings in words and pictures. They record differences in words and symbols. The additive identity is reviewed in the context of comparing equal sets. Several pieces of literature appropriate for use with this lesson are suggested.
Standard(s): [MA2013] (1) 8: Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. [1OA8]
Subject: Mathematics Title: How Many More?
Description: In this lesson, one of a multipart unit from Illuminations, students write subtraction problems, model them with sets of fishshaped crackers, and communicate their findings in words and pictures. They record differences in words and symbols. The additive identity is reviewed in the context of comparing equal sets. Several pieces of literature appropriate for use with this lesson are suggested. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Building Sets of 17 and 18
Description:
In this lesson, one of a multipart unit from Illuminations, students explore sets of up to18. They construct sets up to 18, write the numerals 17 and 18, and model 17 and 18 with bean sticks, cubes, and ten frames.
Standard(s): [MA2013] (2) 6: Count within 1000; skipcount by 5s, 10s, and 100s. [2NBT2]
Subject: Mathematics Title: Building Sets of 17 and 18
Description: In this lesson, one of a multipart unit from Illuminations, students explore sets of up to18. They construct sets up to 18, write the numerals 17 and 18, and model 17 and 18 with bean sticks, cubes, and ten frames. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Multiple Patterns
Description:
In this lesson, one of a multipart unit from Illuminations, students explore patterns that involve doubling. They use objects and numbers in their exploration and record them using a table.
Standard(s): [MA2013] (3) 10: Use place value understanding to round whole numbers to the nearest 10 or 100. [3NBT1]
Subject: Mathematics Title: Multiple Patterns
Description: In this lesson, one of a multipart unit from Illuminations, students explore patterns that involve doubling. They use objects and numbers in their exploration and record them using a table. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Finding Fact Families
Description:
In this lesson, one of a multipart unit from Illuminations, the relationship of subtraction to addition is introduced with a book and with dominoes. Then, the children explore the concept of missing addends. They also add cards with sums of 4 to their individual set of triangleshaped flash cards. Several pieces of literature appropriate for use with this lesson are suggested.
Standard(s): [MA2013] (1) 8: Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. [1OA8]
Subject: Mathematics Title: Finding Fact Families
Description: In this lesson, one of a multipart unit from Illuminations, the relationship of subtraction to addition is introduced with a book and with dominoes. Then, the children explore the concept of missing addends. They also add cards with sums of 4 to their individual set of triangleshaped flash cards. Several pieces of literature appropriate for use with this lesson are suggested. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Some Special Sums
Description:
In this lesson, one of a multipart unit from Illuminations, students practice doubles and doublesplusone addition facts. They record their current level of mastery of the addition facts on their personal addition chart.
Standard(s): [MA2013] (1) 8: Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. [1OA8]
Subject: Mathematics Title: Some Special Sums
Description: In this lesson, one of a multipart unit from Illuminations, students practice doubles and doublesplusone addition facts. They record their current level of mastery of the addition facts on their personal addition chart. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Baby Weight
Description:
In this lesson, one of a multipart unit from Illuminations, students work with data to complete an organized chart for the purpose of transferring information to a graph or for the purpose of generalizing a rule.
Standard(s): [MA2013] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1OA5]
Subject: Mathematics Title: Baby Weight
Description: In this lesson, one of a multipart unit from Illuminations, students work with data to complete an organized chart for the purpose of transferring information to a graph or for the purpose of generalizing a rule. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Links Away
Description:
In this sevenlesson unit, from Illuminations, students explore the five models of subtraction (counting, sets, number line, balanced equations and inverse of addition) using links. They also learn that the order property does not hold for subtraction and explore the relation between addition and subtraction. Students also write story problems in which subtraction is required and begin to memorize the subtraction facts.
Standard(s): [MA2013] (2) 26: Partition circles and rectangles into two, three, or four equal shares; describe the shares using the words halves, thirds, half of, a third of, etc.; and describe the whole as two halves, three thirds, or four fourths. Recognize that equal shares of identical wholes need not have the same shape. [2G3]
Subject: Mathematics Title: Links Away
Description: In this sevenlesson unit, from Illuminations, students explore the five models of subtraction (counting, sets, number line, balanced equations and inverse of addition) using links. They also learn that the order property does not hold for subtraction and explore the relation between addition and subtraction. Students also write story problems in which subtraction is required and begin to memorize the subtraction facts. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Taking Away Sets
Description:
This lesson, one of a multipart unit from Illuminations, encourages students to explore another model for subtraction, the familiar set model. Reading one of the many books that feature subtraction sets the stage for this lesson in which the students write story problems, find differences using sets, and present results in a table. In the discussion of the table, they focus on the effects of subtracting all and subtracting 0.
Standard(s): [MA2013] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1OA5]
Subject: Mathematics Title: Taking Away Sets
Description: This lesson, one of a multipart unit from Illuminations, encourages students to explore another model for subtraction, the familiar set model. Reading one of the many books that feature subtraction sets the stage for this lesson in which the students write story problems, find differences using sets, and present results in a table. In the discussion of the table, they focus on the effects of subtracting all and subtracting 0. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: Block Pounds
Description:
In this lesson, from Illuminations, students explore the use of variables as unknowns as they solve for the weights of objects using information presented in pictures. They also model situations that involve the addition and subtraction of whole numbers, using objects, pictures, and symbols.
Standard(s): [MA2013] (2) 13: Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.) [2NBT9]
Subject: Mathematics Title: Block Pounds
Description: In this lesson, from Illuminations, students explore the use of variables as unknowns as they solve for the weights of objects using information presented in pictures. They also model situations that involve the addition and subtraction of whole numbers, using objects, pictures, and symbols. Thinkfinity Partner: Illuminations Grade Span: K,PreK,1,2
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Title: In Search of Sunken Math Facts
Digital Tool:
Splash Math Web Address URL:
https://itunes.apple.com/us/app/splashmathgrades1to5/id672658828?mt=8 Standard(s):
[MA2013] (1) 10: Understand that the two digits of a twodigit number represent amounts of tens and ones. Understand the following as special cases: [1NBT2] Digital Tool Description: Splash Math is an app that can be downloaded for each grade level. It provides interactive practice and math activities that catch the eye with fun, underwaterthemed backgrounds and sounds. Students have the feel of being in the ocean while answering the math questions, which is why relating searching out the answers to searching for sunken treasure is a great way to get the students' focus.
Title: In Search of Sunken Math Facts Digital Tool: Splash Math Digital Tool Description: Splash Math is an app that can be downloaded for each grade level. It provides interactive practice and math activities that catch the eye with fun, underwaterthemed backgrounds and sounds. Students have the feel of being in the ocean while answering the math questions, which is why relating searching out the answers to searching for sunken treasure is a great way to get the students' focus.
ALEX Podcasts
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Title: Let's Make Ten
Overview:
In this activity, students practice determining different ways to make 10. They work together as partners and roll dice to determine the numbers they work with. They have to evaluate their numbers rolled to find a way to make a total of 10. They color in their bars to represent the numbers they rolled. A number sentence is composed and then they move on to the next roll. Once the activity is complete, a whole group discussion takes place and all the combinations that the students found are listed on the board. Standard(s):
[MA2013] (1) 6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows
12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). [1OA6]
Let's Make Ten Overview: In this activity, students practice determining different ways to make 10. They work together as partners and roll dice to determine the numbers they work with. They have to evaluate their numbers rolled to find a way to make a total of 10. They color in their bars to represent the numbers they rolled. A number sentence is composed and then they move on to the next roll. Once the activity is complete, a whole group discussion takes place and all the combinations that the students found are listed on the board.
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Title: Calendar Math
Overview:
In this podcast our class will demonstrate how we use calendar math each day. We discussed the days of the week. We graphed the daily, monthly and yearly weather. We used the 100's chart to practice skip counting and even and odd numbers. We used straws to count the days of school, grouping ones, tens and one hundreds. Standard(s):
[MA2013] (1) 17: Tell and write time in hours and halfhours using analog and digital clocks. [1MD3]
Calendar Math Overview: In this podcast our class will demonstrate how we use calendar math each day. We discussed the days of the week. We graphed the daily, monthly and yearly weather. We used the 100's chart to practice skip counting and even and odd numbers. We used straws to count the days of school, grouping ones, tens and one hundreds.
Web Resources
Interactives/Games
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Title: Can You Add and Subtract?
Description:
Students will practice adding and subtracting with illustrations.
Standard(s): [MA2013] (1) 6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows
12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). [1OA6]
Can You Add and Subtract?
http://www.glencoe.c...
Students will practice adding and subtracting with illustrations.
Learning Activities
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Title: Can You Add and Subtract?
Description:
Students will practice adding and subtracting with illustrations.
Standard(s): [MA2013] (1) 6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows
12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). [1OA6]
Can You Add and Subtract?
http://www.glencoe.c...
Students will practice adding and subtracting with illustrations.

