Take a slice out of life. The ninth section in a series of 23 introduces classmates to Cavalieri's principle using cross sections of a cone and stacks of coins. Class members participate in a discussion using pyramids and how Cavalieri's...

Finalize the plans before playing in the sand. Learners design sandcastles using geometric and composite figures. They create blueprints, including the scale, and three-dimensional models of their castles. Finally, scholars calculate the...

Create a geometric playground. Pupils work through a performance task to demonstrate their ability to use geometric concepts to solve everyday problems. The accompanying engineering design lessons show teachers how the assessment works...

Is it possible to find the volume of a cone? Of course! Using the formula for the volume of a cone, the video shows how to calculate an exact and an approximate answer for a cone's volume. The worksheets challenge pupils to perform...

Math can be a problem in eighth grade. Sample items show how problem solving exists within the eighth grade standards. Part of the Gr. 8 Claim 2 - 4 Item Slide Shows series, the presentation contains eight items to illustrate the...

A slideshow covering the Smarter Balanced Target I on solving problems involving volume of cylinders, cones, and spheres contains five sample items. Items range from finding the volume of a figure to finding the altitude of a cone given...

There's a formula for that. An educational video shows viewers how to apply geometry formulas to solve problems. It covers the formulas for the circumference of a circle, volume of a cone, and the Pythagorean Theorem.

Just how much ice cream will the cone hold? The video provides the formulas to find the surface area and the volume of cones. Using example problems, the section of a geometry playlist shows how to use the formulas to find the surface...

Poor cones; they'll never live up to cylinders. Pupils learn how the volumes of cones relate to the volume of cylinders. The results of the activity show that the volume of a cone only amounts to a third of the volume of a cylinder with...

Fluency is more than just timed tests. A helpful resource provides a series of fluency-building activities designed for middle school mathematics. The activities come in two forms, one that uses whiteboards and a second designed to help...

Discover another way to find the volume of a cone. Pupils explore how the area of a cross section changes as it moves through a cone. The interactive uses that knowledge to develop the integral to use to find the volume of the cone....

What does the volume of a pyramid have to do with the volume of a cone? Young mathematicians derive the volume formula for cones by considering how the cone's cross-sectional areas compare to that of a rectangular pyramid. Solutions will...

Does doubling a dimension result in doubling the volume? Pupils analyze the result when doubling a dimension of a cone. Given the formula, young mathematicians determine what happens to the volume of a cone when the height, radius, and...

Snow cones: more volume with cones or cups? Individuals find the volume of a cone and a cylindrical cup from diagrams. They compare the volumes to answer the opening question.

How can you better explain the standards? A collection of resources gives teachers the resources needed to teach topics within the eighth grade curriculum. Lessons provide engaging activities to use within the classroom. 

Turn up the volume in 3-D. The video introduces the concept of volume and the units used to measure it. Using a graphical representation of translating 2-D figures, the resource develops the formulas for finding the volume of prisms and...