Illuminations: Hay Bale Farmer - Feb 5, 2013

Students use math reasoning to solve a problem: what shape of hay bale is economically preferable for storing in a barn -- cylindrical or rectangular?

Illuminations: Learning About Properties of Vectors and Vector Sums Using Dynamic Software - Feb 5, 2013

This two-day lesson is built around a pair of online games that let beginners investigate single-vector and dual-vector systems.  Includes post-lesson assessments with answers provided. NOTE: Requires Flash.

Teachers' Domain: Why Do Snowflakes Come in So Many Shapes and Sizes? - Jan 2, 2013

Multimedia lesson lets kids build an apparatus to create their own snow crystals. Simulations help them visualize the forces that interact at the molecular scale to create these wonders of nature.

TryEngineering: Interactive Gumball Machine - Dec 26, 2012

Kids explore kinetic and potential energy as they work on engineering design teams to build the best gumball slide. For grades 7-9.

Teachers' Domain: Galileo: A Different Thinker - Nov 30, 2012

Galileo's classic experiments on gravity and inertia are presented in an entertaining multimedia format.

PhET: Gas Laws Lesson Plan - Nov 30, 2012

This lesson plan is a companion to the simulation "Gas Properties" and includes a series of questions, graphs and tasks with student worksheets available.

Navigational Vectors - Nov 30, 2012

This unique and highly engaging project provides opportunities for students to apply understanding of vectors as they learn airplane navigation by tracking airplanes flying in U.S. skies.

TryEngineering: Lesson Plans - Nov 30, 2012

Want to do more integration of engineering practices? Here are turn-key lessons with student guides and worksheets.

TeachEngineering: Using Spectral Data to Explore Saturn - Nov 18, 2012

Using authentic data from the Cassini mission, students compare the chemical composition of Earth, Saturn, and Titan. Package includes lesson, worksheet with answer key, Power Point warm-up, and Flash interactive activity.

PhET Teacher Activities: Air Resistance Lesson - Oct 15, 2012

An excellent two-day lesson for middle school, designed to accompany the PhET simulation Projectile Motion. It was crafted by educators to provide robust support to both teachers and learners on projectile motion with and without air resistance. You will find scripted teacher discussion, explanations of fluid properties of air, and modifiable worksheets.