Appropriate for Grades 6-10 Ecology and biodiversity are hot topics in the classroom! This engaging kit for middle and high school students, developed by Chuck Downing, addresses these topics through cooperative learning. Seven groups of students work together to complete a biome jigsaw puzzle. Each group also receives a bag of 30 cards describing one world biome. Students use the number and types of organisms described on the cards to determine which biome they have and to investigate various aspects of that biome's biodiversity.