## Lesson Highlights

## Newest Lessons

### Frustration: Analyzing a Card Game with Probability

6-8

This lesson engages students in the joy of mathematical inquiry through a game, while building number sense, understanding of uncertainty, statistical reasoning, and discourse skills. Students will explore the ideas of experimental and conditional probability through the card game, *Frustration*.

### Neutralizing Reactions and Inverses

6-8

In this lesson, students will integrate science and math, exploring how neutralization reactions can help us understand that the sum of any number and its additive inverse is zero. ### Getting Positive About Integer Arithmetic

In this lesson, we share a series of tasks that can support students to order and compare signed numbers and develop multiple ways to reason productively about integer addition and subtraction.### Make One (Face-to-Face)

3-5

This lesson is based on the

*MTLT*article, “Playing with Fractions” by Juli K. Dixon, Treshonda Rutledge, Jennifer C. Caton, and Edward C. Nolan. In this lesson students model fractions with a fraction kit and reason about adding fractions with unlike denominators.### Model Eliciting Activity (MEA)

3-5, 6-8

This lesson is based on the *MTLT*article, “Developing Statistical Modeling with Helicopters” by Katie Makar, Sue Allmond, Helen M. Doerr, and Robert C. delMas. This lesson engages students in a model eliciting activity to investigate how long a paper helicopter stays in the air.