**Title:** Fishy Addition!

**Description:**
In this lesson, students will use manipulatives to act out and solve simple addition problems.
**Standard(s): **

[MA2015] (0) 16: Classify objects into given categories; count the number of objects in each category, and sort the categories by count. (Limit category counts to be less than or equal to 10.) [K-MD3]

**Subject:**Mathematics (K)

**Title:**Fishy Addition!

**Description:**In this lesson, students will use manipulatives to act out and solve simple addition problems.

**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:** Begin with Buttons: Looking Back and Moving Forward

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

[MA2015] (1) 5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1-OA5]

**Subject:**Mathematics

**Title:**Begin with Buttons: Looking Back and Moving Forward

**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

**Title:** Numbers Many Ways

**Description:**
In this lesson, one of a multi-part unit from Illuminations, students work with subtraction at the intuitive level as they explore number families and ways to decompose numbers to 10. They also identify members of fact families.
**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:**Numbers Many Ways

**Description:**In this lesson, one of a multi-part unit from Illuminations, students work with subtraction at the intuitive level as they explore number families and ways to decompose numbers to 10. They also identify members of fact families.

**Thinkfinity Partner:**Illuminations

**Grade Span:**K,PreK,1,2

**Title:** Try for Five

**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.
**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:**Health,Mathematics

**Title:**Try for Five

**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

**Title:** Comparing Connecting Cubes: Looking Back and Moving Forward

**Description:**
This lesson, one of a multi-part unit from Illuminations, reviews the work of the previous lessons and suggests a framework for summative assessment. Students use the mathematical knowledge and skills developed in the previous lessons to demonstrate understanding and the ability to apply that knowledge to playing subtraction games.
**Standard(s): **

[MA2015] (0) 10: Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1). [K-OA3]

**Subject:**Mathematics

**Title:**Comparing Connecting Cubes: Looking Back and Moving Forward

**Description:**This lesson, one of a multi-part unit from Illuminations, reviews the work of the previous lessons and suggests a framework for summative assessment. Students use the mathematical knowledge and skills developed in the previous lessons to demonstrate understanding and the ability to apply that knowledge to playing subtraction games.

**Thinkfinity Partner:**Illuminations

**Grade Span:**K,PreK,1,2

**Title:** Building Sets of Ten

**Description:**
In this lesson, one of a multi-part unit from Illuminations, students explore sets of up to 10 items and practice writing the numbers 0 through 10. Students count back from 10, identify sets of up to 10 objects, and record 10 on a chart. They also construct and decompose sets of up to 10 items. This lesson provides opportunities for reasoning and communication.
**Standard(s): **

[MA2015] (0) 16: Classify objects into given categories; count the number of objects in each category, and sort the categories by count. (Limit category counts to be less than or equal to 10.) [K-MD3]

**Subject:**Mathematics

**Title:**Building Sets of Ten

**Description:**In this lesson, one of a multi-part unit from Illuminations, students explore sets of up to 10 items and practice writing the numbers 0 through 10. Students count back from 10, identify sets of up to 10 objects, and record 10 on a chart. They also construct and decompose sets of up to 10 items. This lesson provides opportunities for reasoning and communication.

**Thinkfinity Partner:**Illuminations

**Grade Span:**K,PreK,1,2

**Title:** Let's Count to 10

**Description:**
In this eight-lesson unit from Illuminations, students make groups of zero to ten objects, connect number names to the groups, compose and decompose numbers, and use numerals to record the size of a group. Visual, auditory, and kinesthetic activities are included in each lesson. The unit is most appropriate for students learning at the kindergarten and grade one levels.
**Standard(s): **

[MA2015] (0) 11: For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation. [K-OA4]

**Subject:**Mathematics

**Title:**Let's Count to 10

**Description:**In this eight-lesson unit from Illuminations, students make groups of zero to ten objects, connect number names to the groups, compose and decompose numbers, and use numerals to record the size of a group. Visual, auditory, and kinesthetic activities are included in each lesson. The unit is most appropriate for students learning at the kindergarten and grade one levels.

**Thinkfinity Partner:**Illuminations

**Grade Span:**K,PreK,1,2

**Title:** Let's Count to 5

**Description:**
In this seven-lesson unit, from Illuminations, students make groups of zero through five objects and connect number words to the groups. They use numerals to record the size of a group. Familiar nursery rhymes and songs and visual, auditory and kinesthetic activities are included in each lesson. The unit is most appropriate for students learning at the prekindergarten and kindergarten levels.
**Standard(s): **

[MA2015] (0) 11: For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation. [K-OA4]

**Subject:**Mathematics

**Title:**Let's Count to 5

**Description:**In this seven-lesson unit, from Illuminations, students make groups of zero through five objects and connect number words to the groups. They use numerals to record the size of a group. Familiar nursery rhymes and songs and visual, auditory and kinesthetic activities are included in each lesson. The unit is most appropriate for students learning at the prekindergarten and kindergarten levels.

**Thinkfinity Partner:**Illuminations

**Grade Span:**K,PreK,1,2