A collection of environmental based math problems for 3rd and 4th graders. The problems are designed to work on in collaborative groups, sharing with partners and finally agreeing on their answers with the entire class. Children learn to persevere, work together, work with precision and to make sure their answers make sense. Finally the kids are encouraged to defend and modify their answers based on conversations with the class. Hope you and your kids enjoy the process and learn a bit about the earth!