Activity
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Circles

For Students 9th - 10th Standards
Use this tutorial to learn about the standard-form equation for a circle. Several step-by-step solutions and examples help you understand the part of the circle and how they relate to the equation.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Equations of Lines

For Students 9th - 10th Standards
This tutorial covers x & y intercepts, point-slope form, slope-intercept form, graphing, and more. Use the practice problems at the end to check your skills.
Interactive
Doina Popovici

Math Play: 4th Grade Halloween Math Game

For Students 3rd - 5th
This game will test students understanding of standard numbers in expanded forms. Students destroy the monsters by answering the questions about numbers in expanded, standard, or word form.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Finding Equal Groups

For Teachers K - 1st Standards
This activity will test how quickly students can count objects. The teacher will assemble a variety of groups of objects in a few different forms (examples included). Students will race against the clock to sort the groups of objects...