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Balancing

In this lesson, the fourth of a six-part unit from Illuminations, students are encouraged to explore another model of subtraction—the balance. This model leads naturally to recording with equations. Students use actual and virtual pan balances in... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Balancing discoveries

This lesson, one of a six-part unit from Illuminations titled “Do It with Dominoes,” encourages students to explore another model of addition, the “balance” model. The exploration also involves recording the modeled addition facts... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

Begin with buttons: Looking back and moving forward

This Illuminations lesson is the last of an eight-part unit titled “Begin With Buttons.” In this lesson, students review the work of the previous lessons through a variety of activity stations, one of which involves using an interactive website.... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

Block pounds

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,... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Combining foods

In this lesson, the fourth of a six-part unit from Illuminations titled “Food Pyramid Power,” students explore addition and comparison subtraction by modeling and recording related addition and subtraction facts for a given number. The students... (Learn more)

Format: lesson plan (grade K–2 Healthful Living and Mathematics)

Provided by: Illuminations

Comparing connecting cubes: Looking back and moving forward

This lesson, the last of a six-lesson 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... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Comparing sets

In this lesson, the second of a six-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... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

Counting back and counting on

This lesson, one of a six-part unit from Illuminations titled “Links Away,” focuses on the counting model for subtraction. Students model numbers as a counting book is read. They then make a chain of links and write in vertical and horizontal... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

Counting to find sums

This lesson, one of a six-part unit from Illuminations titled “Do it with Dominoes,” 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.... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

Draw a math story: From the concrete to the symbolic

This ReadWriteThink activity begins with the reading aloud of several math-oriented stories, identifies key mathematical vocabulary terms, models math story writing, and then gives students an opportunity to write addition and subtraction stories. Students... (Learn more)

Format: lesson plan (grade K–2 English Language Arts and Mathematics)

Provided by: ReadWriteThink

Estimator Four

This activity allows two users to play a game of estimation where each player tries to connect four game pieces in a row before his or her opponent does. The players earn game pieces by accurately estimating the answers to various problems. Users can choose... (Learn more)

Format: activity/lesson plan (grade 3–12 Mathematics)

Provided by: Shodor

Exploring adding with sets

This lesson, one of a six-part unit from Illuminations titled “Do It with Dominoes,” builds on lessons one and two and encourages students to explore another model for addition, the “familiar set” model. This model is similar to... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Fact families

In this lesson, the fifth of a six-part unit from Illuminations, students use books and connecting cubes to explore the relationship of addition to subtraction. Students search for related addition and subtraction facts for a given number using a virtual... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Fact family fun

In this lesson, one of a six-part unit from Illuminations titled “How Many More Fish?,” the relation of addition to subtraction is explored with fish-shaped crackers. The students search for related addition and subtraction facts for a given... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Finding addition patterns

In this lesson, one of a five-part unit from Illuminations titled “Let's Learn Those Facts,” a game encourages students to find the sums of two one-digit numbers. Students explore commutativity and examine addition patterns. Then they record... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Finding fact families

In this lesson, one of a seven-part unit from Illuminations titled “Links Away,” students explore the relation of addition to subtraction. Then the children search for related addition and subtraction facts for a given number. They also investigate... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Finding fact families

In this lesson, one of a six-part unit from Illuminations titled “Do It with Dominoes,” 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... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Finding sums to six

In this lesson, one of a five-part unit from Illuminations titled “Let's Learn Those Facts,” students discover the role of the additive identity and explore sums to six. They continue to fill in their personal addition chart. (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Food pyramid power: Looking back and moving forward

In this lesson, the last of a six-part unit from Illuminations titled “Food Pyramid Power,” students display their knowledge of properties of objects for sorting and creating patterns. They also demonstrate an understanding of commutativity... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Hopping on the number line

In this lesson, one of a six-part unit from Illuminations titled “Do It with Dominoes,” students generate sums using the “number line” model. This model highlights the measurement aspect of addition and is a distinctly different... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations