## Search Results

### Funky Protractors

3-5
This lesson is based on the MTLT  article, “Funky Protractors for Exploring Angle Measures” by Hamilton L. Hardison. In this lesson, students recognize and justify the validity of a tool and differentiate angularity from nonangular features.

### Model Application Activity (MAA)

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. In this lesson, students design a way to collect evidence of flight durations based on two types of paper helicopters.

### Model Exploration Activity (MXA)

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 exploration activity to explore dot plots using a paper helicopter investigation.

### 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.

### 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.

### Using Number Talks to Compare Fractions

3-5

Based on an MTLT article, the authors implement a coordinated series of well-connected number talks that allow for students to make sense of a variety of strategies that provide “flexibility” in their mathematical reasoning when comparing fractions.

### Understanding and Comparing Three-Digit Numbers

3-5

In this lesson, students will learn to make math drawings for hundreds, tens, and ones and connect the drawings to numerical symbols on layered place-value cards.  Students will then compare two-digit and three-digit numbers, justifying their choices using math drawings and/or the layered place-value cards to show their classmates their reasoning.