Activity
University of Cambridge

University of Cambridge: Nrich: Triangles to Tetrahedra

For Students 3rd - 8th Standards
Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gmd, G Mg Tennis Balls in a Can

For Teachers 9th - 10th Standards
For this task, learners investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.g Flower Vases

For Teachers 8th Standards
This task asks students to compare the volumes of three vases that are different shapes - a cylinder, a cone, and a sphere - as well as one with a combination of shapes. They are then asked to create a vase with composite shapes, find...
Handout
Math Open Reference

Math Open Reference: Prism

For Students 6th - 8th Standards
Use this interactive tool to explore prisms. Change the height and the shape of the base to see how these affect the prism. There are also several additional options, e.g., making it oblique or transparent. Properties of a prism are...
Interactive
Math Is Fun

Math Is Fun: Area Calculator

For Students 5th - 8th
The resource consists of a tool to investigate the area of a variety of shapes. It could also be useful when calculating the surface area of each face of a 3D solid, and then adding them together.