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- Grade Range
- 5th - 8th
- Rating

Students examine the concepts of supply and demand. They watch a video, research and identify the effect of fads, and complete the worksheet, Fads of the Last 100 Years. Full Review »
- Grade Range
- 7th - 8th
- Rating

Students examine beam, arch, and suspension bridges and how they work. They design and construct one of the three types of bridges, testing it to see how heavy a load it can carry. Full Review »
- Grade Range
- 7th - 8th
- Rating

Students explore and analyze the relationship of buoyancy and displacement needed to make an object float. They examine various boat designs, then design and build clay and aluminum boats that hold a cargo of marbles. Full Review »
- Grade Range
- 6th - 9th
- Rating

Students examine the concept of positive and negative integers, adding and subtracting integers on a number line. They visit various Internet websites, solving problems using integers and completing a worksheet. Full Review »
- Grade Range
- 1st - 3rd
- Rating

Students use the Internet to explore the four stages of a butterfly's life cycle. They make a model of a butterfly using macaroni, sticks and leaves. Full Review »
- Grade Range
- 2nd - 3rd
- Rating

Students write the names, draw pictures, and write descriptive words and phases of cirrus, stratus, and cumulus clouds. They view a video and participate in interactive quizzes about clouds. Full Review »
- Grade Range
- 3rd - 5th
- Rating

Students play 20 Questions with animal characteristics and then view an animation of how a tadpole changes into a frog. They consider the importance of camouflage to frogs and write out the story of a frog from tadpole to adult. Full Review »
- Grade Range
- 6th - 8th
- Rating

Students examine websites and video clips to become familiar with tenets of the Homestead Act, challenges faced by settlers and misconceptions about settlers. They role-play colonists on the Planet XR-38 and make choices similar to western settlers. Full Review »
- Grade Range
- 5th - 6th
- Rating

Students discover some famous, and not-so-famous, bridge mishaps throughout the world. They create a timeline, as their final activity, to see if a significant number of bridge collapses occurred during any specific time period. Full Review »
- Grade Range
- 1st - 12th
- Rating

Students read Dr. Seuss', The Lorax in order to identify ways to care for the environment and natural resources before participating in a cross grade level lesson. They create presentations to share with first graders after identify literacy skill that are important for young children. Full Review »

