8th grade student will apply Newton’s Laws to design, test and evaluate materials to create the most protective helmet for an activity of their choice. Students will use force sensors and Vernier software to analyze the force reduction for their helmets. The culmination of this project is for students to write and present a sales pitch to promote their helmet to their peers at an annual "conference."

So, if gravity pulls everything down, then why don't things on the bottom of the Earth get pulled down into space? In this episode of Crash Course Kids, Sabrina talks about gravity and explains that when we talk about gravity pulling things down, what we really mean is gravity is pulling things TOWARD the Earth. Really, it's all about attraction.

Use the sliders in the Rose-Colored Glasses SIM to play around with different colors for the light source, the car, and the glasses to answer these questions and learn more about the concept of light and color!

We have also created a short (2:44 min) tutorial video that goes into more detail on how to use this SIM for both you and your students.

Check out the entire collection of over 120 CK-12 Simulations at www.ck12.org/sims.

In this lesson, students will explore motion, rockets and rocket motion while assisting Spacewoman Tess, Spaceman Rohan and Maya in their explorations. They will first learn some basic facts about vehicles, rockets and why we use them. Then, the students will discover that the motion of all objects including the flight of a rocket and movement of a canoe is governed by Newton's three laws of motion.

« Ton ketchup ne veut pas sortir de la bouteille? Laisse-nous te révéler les secrets de la viscosité de ce fluide non newtonien! »

*Texte, images, animation, vidéo:

-Comment les fluides s’écoulent-ils?
-Pourquoi le ketchup est-il si particulier?
-Quelle est la meilleure façon de faire couler du ketchup?
-Amorces de discussion

*Suggestions et liens annexes: articles, activités de compréhension « relation question-réponse » et « toile de définition du concept » (fiches reproductibles adaptées et téléchargeables), activité tableau en deux volets, projet/enquête Tomatosphère (germination de graines), vidéos divertissantes et informatives