Encourage tinkering with ideas, relationships, connections. Set up situations where students have to find information not readily available in school texts. Provide opportunity for students to design open-ended explorations of the concept. Provide multiple options so students can plan a unique "proof" of learning.

Plan to remove as much water as possible from the watermelon.

Objective: Plan an experiment.

Activity: In cooperative groups, the students will plan a procedure for removing the water from the watermelon. They will also decide what tools will be needed to do this and assign members of the group to bring these in. This will be recorded under step four on their lab report/experiment.

Assessment: Teacher evaluation of written response.