# The Lesson Study Group

at Mills College

## To Open a Cube: A Math Research Lesson on Problem-Solving & Geometry

Description This video features highlights from a fifth grade lesson designed to support students as they explore the properties of a geometrical shape (cube) by identifying the number of edges one needs to cut to open it completely. Students share different...

## Can You Find the Area? Three Mathematics Research Lessons

Description: This video provides highlights from three fourth-grade lessons designed to support students as they discover formulas for the area of parallelograms, triangles, and trapezoids. Students share different strategies and engage in classroom discussions,...

## Multiplication of a Whole Number by a Decimal

Description This video features a fifth grade lesson designed to support students as they explore how to multiply a whole number by a decimal (6 x 0.8). Students share different strategies and engage in a classroom discussion that surfaces how we can apply prior...

## How Do Mathematicians Add Fractions with Unlike Denominators?

Description This video features a fourth grade lesson designed to support students as they explore adding fractions with unlike denominators (1/4 + 3/8). Students share different strategies and engage in a classroom discussion that surfaces the importance of using...

## Introduction to Fractions in a Linear Measurement Context

Description This video features a fourth grade lesson designed to support students as they explore fractions in a linear measurement context. Students share different strategies and engage in a classroom discussion that surfaces how a fraction (3/4) can be considered...