Illuminations
We've released Equivalent Fractions back into the iTunes store—download it today! Pre-K–Grade 5: Become confident in facts up to 12 x 12 using visual models that stress the conceptual aspects of multiplication. Ask a friend to pick a number from 1 through 1,000. After asking him ten questions that can be answered yes or no, you tell him the ...
Illuminations: Lessons - National Council of Teachers of Mathematics
6-8. In this lesson, students will use ratio tables and graphs to estimate how much plastic is used by all the students in their class, all the students in their grade, and all the students in their school. Students will then determine how many plastic items each student can use in order to meet a school-wide goal of reducing plastic consumption.
About Illuminations - National Council of Teachers of Mathematics
Who We Are. Illuminations is a project designed by the National Council of Teachers of Mathematics (NCTM).. What We Do. Illuminations works to serve you by increasing access to quality standards-based resources for teaching and learning mathematics, including interactive tools for students and instructional support for teachers.
Illuminations: All Games
Algebra Tiles. 6-8, 9-12. Use tiles to represent variables and constants, learn how to represent and solve algebra problem. Solve equations, substitute in variable expressions, and expand and factor.
Illuminations: Search
Data Analysis & Probability-Kindergarten. Practice; Counting & Cardinality; Algebraic Thinking; Number & Operations
Illuminations: Interactives
Power of a Point. 9-12. Use this tool to investigate what happens when point P is moved to various points within, on, and outside the circle. What, if any, relationships can you identify among the segments and radius? See all Interactives.
Illuminations: Search
They will also identify members of fact families. (A fact family is a set of three [or two] numbers that can be related by addition and subtraction, for example: 7 = 4 + 3, 7 = 3 + 4, 7 - 4 = 3, and 7 - 3 = 4. When the number is a double, there are only two members of the fact family. An example would be 10 - 5 = 5, and 5 + 5 = 10.)
Illuminations - National Council of Teachers of Mathematics
Illuminations: Resources for Teaching Math. Contact Us; Join NCTM; Troubleshooting; About Illuminations; Lessons. All Lessons; Pre-K-2; 3-5; 6-8; 9-12; Brain Teasers
Illuminations: Search
Explore different representations for fractions including improper fractions, mixed numbers, decimals, and percentages. Additionally, there are length, area, region, and set models.
Illuminations Mathlets - Areas
Overview of Areas. One of the most important measurements in geometry is the measurement of area. In these applets, you will see interactively how to find the area of some common shapes. The areas of the three shapes shown here are all related to each other. You can find the area of a triangle using the area of a parallelogram, which in turn ...