Thank you for your interest in NCTM’s Illuminations. Beginning in mid-April, all Illuminations content will be moving to nctm.org/illuminations. Interactives will remain openly available and NCTM members will have access to all Illuminations lessons with new filtering and search options. We hope you will continue to utilize and enjoy these resources on nctm.org.

## Search Results

### 4.1 Creating, Describing, and Analyzing Patterns

Pre-K-2
Encourage students to use visualization, spatial reasoning, and geometric modeling to build their own patterns or recreate one from given square arrays.

### 4.1.1 Making Patterns

Pre-K-2

Create, compare, and view multiple repetitions of pattern units.

### 4.1.2 Describing Patterns

Pre-K-2

Give examples of various ways students might interpret the same sequence of cubes.

### 4.1.3 Extending Pattern Understanding

Pre-K-2

Begin to relate two patterns in a functional relationship.

### 4.2 Investigating Geometry Concepts on GeoBoards

Pre-K-2
Explore geometric shapes and measurements.

### 4.2.1 Making Triangles

Pre-K-2

Understand the mathematical meaning of a triangle and the idea of congruence, or sameness, in geometry.

### 4.2.2 Creating Polygons

Pre-K-2
Make and compare a variety of polygons.