**Title:** Addition With Regrouping

**Description:**
During this lesson, students will learn how to add 3-digit numbers using regrouping. Students will use manipulatives to help them learn this new concept. Students will have the opportunity to reinforce what they learn by navigating different websites.
**Standard(s): **

[MA2015] (2) 9: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. [2-NBT5]

**Subject:**Mathematics (2), or Technology Education (3 - 5)

**Title:**Addition With Regrouping

**Description:**During this lesson, students will learn how to add 3-digit numbers using regrouping. Students will use manipulatives to help them learn this new concept. Students will have the opportunity to reinforce what they learn by navigating different websites.

**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): **

[MA2015] (3) 5: Apply properties of operations as strategies to multiply and divide. (Students need not use formal terms for these properties.) [3-OA5]

**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.

**Title:** What To Buy?

**Description:**
During this lesson students get to experience shopping through a slide show. They have to choose an item and then place the correct amount of money beside the item they wish to purchase. Students also practice counting money via the Internet.
**Standard(s): **

[MA2015] (2) 21: Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. [2-MD8]

**Subject:**Mathematics (2), or Technology Education (K - 2)

**Title:**What To Buy?

**Description:**During this lesson students get to experience shopping through a slide show. They have to choose an item and then place the correct amount of money beside the item they wish to purchase. Students also practice counting money via the Internet.

**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): **

[MA2015] (3) 9: Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. [3-OA9]

**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.

**Title:** Lost Buttons

**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.
**Standard(s): **

[MA2015] (2) 18: Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem. [2-MD5]

**Subject:**Language Arts,Mathematics

**Title:**Lost Buttons

**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

**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): **

[MA2015] (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.) [2-NBT9]

**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

**Title:** Let's Learn Those Facts: Looking Back and Moving Forward

**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.
**Standard(s): **

[MA2015] (2) 9: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. [2-NBT5]

**Subject:**Mathematics

**Title:**Let's Learn Those Facts: Looking Back and Moving Forward

**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

**Title:** Recognize Associative Property of Addition and Multiplication

**Overview:**
A student describes using the associative property in an expression and how it doesn't change the value. He shows it with an addition and multiplication problem. **Standard(s): **

[MA2015] (2) 9: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. [2-NBT5]

**Overview:**

A student describes using the associative property in an expression and how it doesn't change the value. He shows it with an addition and multiplication problem.

**Title:** 2 digit Addition and Subtraction with Regrouping

**Overview:**
This video shows students how to regroup in addition and subtraction. The phrase, "bigger bottom better regroup" is used for subtraction. There are "now you try" problems included. This video could be used after the concept is taught and students have had time to practice. **Standard(s): **

[MA2015] (2) 9: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. [2-NBT5]

**Overview:**

This video shows students how to regroup in addition and subtraction. The phrase, "bigger bottom better regroup" is used for subtraction. There are "now you try" problems included. This video could be used after the concept is taught and students have had time to practice.