The National Council of Teachers of Mathematics (NCTM) website Illuminations houses a collection of 607 PreK-12 lesson plans and 108 online activities to support math education.
Lessons & Activities can be searched by keyword range and topic. An advanced option lets teachers search only for lessons with associated online activities.
- Ladybug Adventures is a four-lesson grade K-2 geometry unit that lets students use what they know of number, measurement, and geometry to solve problems in a computer environment.
- In Building A Box students in grades 3-8 develop their spatial visualization and geometric understanding. The lesson links to Cube Nets, an activity sheet that asks students which of 24 figures will make a cube.
- Data Grapher is an online activity for students in grades 3-8. Students analyze data by entering multiple rows and columns of data and selecting which data sets to display as bar graph, line graph, pie chart, or pictograph.
- Illuminations latest tool is Dynamic Paper that lets K-12 teachers create nets, graph paper, number lines, number grids, tessellations, shapes, and spinners, and then export them as PDF activity sheets or JPEG images.
Interactives can be searched by keyword, grade range, topic, and standards. Interactives include games, examples, brainteasers, and web sketchpad.