Series: Focus on the Child

# Composing Shapes with Child 12

Duration: 02:36Having video problems?

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A child composes a 6-pointed star shape using pattern blocks in multiple ways.

Focus on the Child videos are taken from one-on-one interviews with individual children. The interviews are designed to elicit evidence of children’s mathematical thinking. They are not teaching episodes or formal assessments.

## Why is this important?

How satisfying to figure out a shape puzzle!

### Big Idea

Shapes can be combined and separated (composed and decomposed) to make new shapes. More

### Big Idea

Spatial relationships can be visualized and manipulated mentally. More

### Common Core Alignment

Geometry More

Source: 10-11 Pre-K Training Video • Copyright: © Erikson Institute • Content ID: EMTR020 ①

# Sorting Rocks with Child 14

A kindergarten student organizes a collection of rocks into unique sets.

# Change Unknown Problem 1 with Child 5

This second grader uses derived facts to solve mentally. Just one example of mental math strategies used by elementary students.

# Problem Solving with Child 5

This second grader demonstrates an interesting choice for a mathematical model by graphing.

## What do you think?

#### New website and book help Early Math Collaborative reach more teachers - Erikson Institute

May 15, 2013 at 2:53pm

[...] One video shows a child laughing with joy when she creates six-pointed stars with triangles, hexagons, and diamonds. To reach this point, the teacher carefully supports the child’s exploration without giving her the answers and introduces mathematical language to the child. At the end, the teacher reinforces the math lesson: shapes can be combined and separated to make new shapes. Watch the video [...]

#### Nancy Gaumer

April 4, 2014 at 7:54pm

I totally loved the composing shapes video! The JOY and EXCITEMENT the child showed while doing this was amazing. The teacher encouraged the child and used all the shape names that I have forgotten. I couldn’t help but clap for child 12!

• Author

#### Cody Meirick

April 5, 2014 at 10:18am

Great!

3. Author