# Category - Measurement

## Visualizing the Area of a Parallelogram Formula

Visualizing the Area of a Parallelogram Formula by decomposing the parallelogram and recomposing to build a rectangle with the same area.

## Visualizing The Area of a Triangle Formula

Build an understanding of the area relationship between triangles and rectangles through this set of Area of a Triangle Number Talk Prompts.

## Visualizing The Volume of a Cylinder

Visual number talk prompts to build on the conceptual understanding of area of a circle to emerge the formula for volume of a cylinder.

## Revealing Equivalent Ratios By Scaling In Tandem

Visual number talk prompts emerging the idea of revealing equivalent ratios by scaling in tandem with ratio reasoning.

## Where Does The Area of a Circle Formula Come From?

Visual number talk prompts unpacking where the area of a circle formula comes from by decomposing the circle and recomposing into a rectangle

## How to Find the Circumference of a Circle Using Pi, π

Visual number talk prompts exploring the ratio between the circumference and the diameter known as Pi, π with ratio & rate reasoning.

## Area of Composite Figures With Non-Standard Units

Visual number talk prompts that explore the area of a composite figure by decomposing and recomposing with non-standard units.

## Multiplicative Comparison With Volume

Visual number talk prompts comparing the volume of 3-D figures multiplicatively using various standard and non-standard cubic units.

## Understanding Area of a Circle Conceptually

Let's tackle Area of a Circle conceptually using a series of visual prompts to help students generate the formula for finding the area of ANY circle...

## Understanding Area of a Triangle Conceptually

Let's tackle Area of a Triangle conceptually using a series of visual prompts to help students generate the formula for finding the area of ANY...