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

### Deep Sea Duel

3-5, 6-8
This strategy game requires you to select cards with a specified sum before your opponent (also available on iOS and Android).

### Dynamic Paper

Pre-K-2, 3-5, 6-8, 9-12

Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? You can create all those things and more! Place the images you want, then export it as a PDF or as a JPG image.

### Pan Balance – Expressions

3-5, 6-8, 9-12
Using this interactive tool, you can practice arithmetic and algebraic skills, and investigate the important concept of equivalence.

### Pan Balance – Numbers

3-5, 6-8
Use this tool to strengthen understanding and computation of numerical expressions and equality using a balance scale.

### Pan Balance – Shapes

3-5, 6-8
Use this tool to build up to algebraic thinking by exploring how to balance shapes of unknown weight.

### Chairs

3-5, 6-8
This applet is used to explore the number of chairs needed when tables are rearranged in a restaurant.

### Fire

3-5, 6-8, 9-12
This applet is designed to simulate the spread of a wildfire using probability.

### KenKen

Pre-K-2, 3-5, 6-8, 9-12
Developing Calculation Skills, Logical Thinking and Persistence with a Puzzle Game

### Name Letters

3-5, 6-8, 9-12
Use this activity to practice solving systems of equations. Use this tool to check students' answers.

### Pick-a-Path

3-5, 6-8

Help Okta reach the target by choosing a path from the top of the maze to the bottom. Seven levels with seven puzzles will test your skills with powers of ten, negative numbers, fractions, decimals, and more. How many starfish can you earn?