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ALEX Lesson Plan Resources
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ALEX Lesson Plans
Subject:
Mathematics (K)
Title:
Mission Addition with Subtraction Action
Description:
This lesson uses manipulatives, acting out situations, and verbal explanations along with technology to work on addition and subtraction with kindergarten students. Students will work in groups to practice different methods of adding and subtracting.
Subject:
Mathematics (K)
Title:
Ice Fishing is for the Birds
Description:
In this lesson, students will represent addition sentences with pictorial representations. Students will also solve an addition problem by using cut out objects to represent the problem.
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.
Subject:
Mathematics (K)
Title:
Subtraction Fun!
Description:
The students will be introduced to the concept of subtraction. They will use different manipulatives to practice this concept. The students will also learn to recognize the minus sign.
Thinkfinity Lesson Plans
Subject:
Mathematics
Title:
Begin with Buttons: Looking Back and Moving Forward
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Description:
In this lesson, one of a multi-part 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
Subject:
Mathematics
Title:
Helping Ladybug Hide with Arrows and Angles
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Description:
In this lesson, one of a multi-part unit from Illuminations, students use a Java applet to hide a ladybug under a leaf. This requires experimentation, planning, and understanding of spatial relationships and visual memory.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Hopping on the Number Line
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Description:
In this lesson, one of a multi-part unit from Illuminations, students generate sums using the '' number line'' model. This model highlights the measurement aspect of addition and is a distinctly different representation of the operation from the model presented in lesson one. The order property is also introduced. At the end of the lesson, students are encouraged to predict sums and to answer puzzles involving addition.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
More and More Buttons
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Description:
In this lesson, one of a multi-part unit from Illuminations, students use buttons to create, model, and record addition sentences. They also explore commutativity in addition contexts.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Where Will I Land?
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Description:
In this lesson, one of a multi-part unit from Illuminations, students find differences using the number line, a continuous model for subtraction. Students are encouraged to predict differences and to compose puzzles involving subtraction. This lesson provides rich experiences in reasoning and problem solving.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Comparing Connecting Cubes
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Description:
In this seven-lesson unit from Illuminations, students use connecting cubes to explore the five models of subtraction (counting, sets, number line, balanced equations, and inverse of addition). The lessons focus on the comparative mode of subtraction. Students explore the relationship between addition and subtraction, write story problems in which comparison is required, and practice the subtraction facts. Several pieces of literature appropriate for use with this lesson are suggested.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Language Arts,Mathematics
Title:
Lost Buttons
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Description:
In this lesson, one of a multi-part unit from Illuminations, students investigate subtraction more directly, beginning with the easier take away mode. They model take away subtraction with buttons and write subtraction sentences. They also work with the additive identity (0) as an addend and as a difference and find missing addends.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Sum Search
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Description:
In this lesson, one of a multi-part unit from Illuminations, students practice addition facts in a concentration-game 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 addition-fact mastery on an addition table.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Let's Learn Those Facts: Looking Back and Moving Forward
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Description:
In this lesson, one of a multi-part unit from Illuminations, students display their knowledge of properties of objects for sorting and creating patterns. They also demonstrate an understanding of commutativity and model addition and subtraction of whole numbers using different representations.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Language Arts
Title:
Giant Story Problems: Reading Comprehension through Math Problem-Solving
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Description:
Students create posters using images, text, and mathematical equations to represent a story problem.
Thinkfinity Partner:
ReadWriteThink
Grade Span:
1,2
Subject:
Mathematics
Title:
Finding the Balance
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Description:
In this lesson, one of a multi-part 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
Subject:
Mathematics
Title:
How Many More Fish? Looking Back and Moving Forward
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Description:
In this lesson, one of a multi-part unit from Illuminations, students use the mathematical knowledge and skills developed in the previous lessons as they play games involving comparative subtraction.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Health,Mathematics
Title:
Try for Five
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Description:
In this lesson, one of a multi-part unit from Illuminations, students explore the many ways to decompose numbers and then build on their knowledge of addition and subtraction to find missing addends. They also visit a Web site related to the food pyramid.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Shirts Full of Buttons
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Description:
In this lesson, one of a multi-part unit from Illuminations, students explore subtraction in the comparative mode by answering questions such as How many more? and How many less? as they match sets of buttons. They also make and discuss bar graphs based on the number of buttons they are wearing.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Electronic Abacus
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Description:
This student interactive, from Illuminations, explores the use of an abacus model for representing numbers and for performing addition. Students can work through several different activities, all of which explore addition.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2,3,4,5
Subject:
Mathematics
Title:
Multiple Patterns
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Description:
In this lesson, one of a multi-part 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
Subject:
Mathematics
Title:
Beverage Sharing and Serving
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Description:
This lesson, one of a multi-part unit from Illuminations, focuses on student organization, preparation, and presentation of some simple foods as a way to apply various mathematical concepts, with problem-solving techniques being a central theme. Students work with a nonstandard unit of measurement to determine the minimum amount of fruit drink needed to serve class members and then prepare and properly serve the beverage to each student.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2,3,4,5
Subject:
Mathematics
Title:
Hopping Backward to Solve Problems
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Description:
In this lesson, one of a multi-part unit from Illuminations, students determine differences using the number line to compare lengths. At the end of the lesson, the students use reasoning and problem-solving to predict differences and answer puzzles involving subtraction.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Language Arts,Mathematics
Title:
Comparing Sets
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Description:
In this lesson, one of a multi-part unit from Illuminations, a children s book sets the stage for encouraging students to review counting back. Students write subtraction problems and model them with cubes. They then compare sets and record differences in the form of a table. 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
Subject:
Mathematics
Title:
Do It With Dominoes
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Description:
In this six-lesson unit from Illuminations, students explore the four models of addition (counting, sets, number line, and balanced equations) using dominoes. Students also learn about the order property, the relation between addition and subtraction, and the result of adding 0. Students engage in a variety of activities, including writing story problems in which the operation of addition is required, beginning to memorize addition facts, investigating properties of addition, and representing addition in pictures.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Taking Away Sets
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Description:
This lesson, one of a multi-part 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
Subject:
Mathematics
Title:
Block Pounds
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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
Subject:
Mathematics
Title:
Building Sets of 13 and 14
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Description:
In this lesson, one of a multi-part unit from Illuminations, students explore sets of 13 and 14. They construct and identify sets of size 13 and size 14. They then compare sets to sets of size 13 and size 14, record the number in the sets, and decompose a set of 13 and a set of 14 in several ways.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
How Many More Fish?
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Description:
In this seven-lesson unit, from Illuminations, students focus on comparative subtraction. Students use fish-shaped crackers to explore all five meanings for the operations of subtraction (counting, sets, number line, balance, and inverse of addition). In these lessons, students use reasoning, represent subtraction in objects and pictures, and record subtraction in both vertical notation and equations.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Counting to Find Sums
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Description:
This lesson, one of a multi-part unit from Illuminations, focuses on the counting model for addition and begins with reading a counting book. Students model the numbers with counters as the book is read. Then they count the spots on each side of a domino and write in vertical and horizontal format the sums suggested by dominoes. Finally, the students illustrate a domino and record a sum it represents for their portfolio. Several pieces of literature appropriate for use with this lesson are suggested.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2
Subject:
Mathematics
Title:
Five Frame
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Description:
This student interactive from Illuminations presents four games that help students develop counting and addition skills. Each of the games uses a frame of five.
Thinkfinity Partner:
Illuminations
Grade Span:
K,PreK,1,2