In this grammar worksheet, students choose the correct verb or expression in parentheses that makes twenty sentences grammatically correct.

In this grammar worksheet, students choose the appropriate verb or helping/linking verbs in twenty sentences that make each one grammatically correct.

Students explore genetic engineering and issues related to risks and benefits of altering agricultural products.

Emulate the work of archaeologists in South Africa attempting to solve the riddles of human evolution by inferring a person's height from the length of one bone. Identify and communicate present-day rituals through ancient art techniques.

Explore the problem of wildlife management in many African countries. Apply critical thinking skills to a decision-making scenario and strategically communicate information.

Investigate the challenges facing archeologists when dealing with local cultures near dig sites, and consider the difficulty of remaining sensitive to the past yet still being able to learn from it.

Explore the issues surrounding the mosquito infestations. Investigate surface tension to explain how the egg rafts stay afloat and mosquitoes are able to stand on the water's surface, and review proper disposal of automobile tires.

Lights! Camera! Action! Our movie director needs your help! Help Walrus pick actors based on the traits that best fit the movie role. Which furry mammal will get the most wanted role in the blockbuster film "Paws"? Which water loving...

Second graders will engage in nonfiction reading and writing strategies that will help them describe and adopt safe and healthy behaviors. An anticipation guide, a song, and several high-interest trade books will engage the the readers...

Players head out to the Canadian Rockies to explore a mountain ecosystem. In this photo safari, players earn points by taking pictures of specific plants and animals.

Players head out to Borneo to explore the rainforest in this photo safari. Earn points by following clues to take pictures of specific plants and animals.

This concise site provides a brief description of the Protist Kingdom. In addition, you will find an explanation of the role of various organelles found in the cell.