Students sort Lego Duplo pieces after determining the attributes to classify them by. They work in pairs to sort a group of Duplo pieces and explain their process to others.

Students discover the importance of knots to mathematicians in developing scientific theories. In small groups, they examine knots and make obeservations about them. Students discuss the ways to distinguish knots and make lists of...

Second graders explore the ways in which animals differ. They discuss the characteristics of insects and spiders. Students identify the characteristics of insects and spiders. They compare and contrast insects and spiders.

Help build the foundation of understanding computer languages with this activity. Demonstrate some of the issues that arise when we try to give precise instructions to achieve a desired outcome.