# Playlist - Number Talk

## 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

## 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.

## 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.

## Scaling Ratios As A Composed Unit With Tape Diagrams

Visual number talk prompts scaling part-part ratios as a composed unit in order to determine which lemonade recipe is better.

## Building Flexibility With Magnitude of Number Using Number Lines

Visual number talk prompts that help build flexibility with the magnitude of number through the partitioning of number lines.

## Visualizing Measures of Central Tendency On The Number Line

Visual number talk prompts involving plotting data points on a number line and then finding measures of central tendency: mean, median, mode.

## Adding Fractions and Decimals Using The Money Model

Visual number talk prompts emerging the idea that adding fractions can be easier using money as the model for thinking and representing.

## Adding, Subtracting and Multiplying Fractions and Decimals Using The Money Model

Visual number talk emerging the idea that adding, subtracting and multiplying fractions and decimals is easy with the money model.