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Two runners

In this lesson, one of a two-part unit from Illuminations titled “Understanding Distance, Speed, and Time Relationships Using Simulation Software,” students physically demonstrate two scenarios involving rate of change, and then use software... (Learn more)

Format: lesson plan (grade 3–5 Mathematics)

Provided by: Illuminations

Using the number line to compare

In this lesson, the third of a six-part unit from Illuminations, students determine differences using the number line to compare lengths. Because this model is based on linear measurement, it is a distinctly different representation from the models presented... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

What balances?

This lesson encourages students to explore another meaning of subtraction, the 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. Through a series... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

What's left?

In this lesson, triangular flash cards and dice games help students practice addition facts. Students modify their “Addition Chart” to record the facts they know at the immediate-recall level. (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations

What's the difference?

In this lesson, the sixth of a six-part Illuminations unit titled “Macaroni Math,” students use reasoning to find differences from numbers up to 10, using real and virtual calculators and an addition chart as tools. They also play a concentration... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Where does the money come from?

With very few exceptions, the U.S. federal government does not have an “income” to spend providing goods and services. The money used for federal spending programs must be collected as federal taxes, or it must be borrowed. This lesson provides... (Learn more)

Format: lesson plan (grade 4 Social Studies)

Provided by: EconEdLink

Where will I land?

In this lesson, the third of a six-part Illuminations unit titled “Macaroni Math,” students find differences using the number line, a continuous model for subtraction. Students are encouraged to predict differences and to compose puzzles involving... (Learn more)

Format: lesson plan (grade 1–2 Mathematics)

Provided by: Illuminations

Who's in the fact family?

In this lesson, the fifth of a six-part Illuminations unit titled “Macaroni Math,” students explore the relation of addition to subtraction. Students use problem-solving skills to find fact families, including those in which one addend is zero... (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: Illuminations