The lesson can also be used to lay a foundation for learning about changes in state and chemical changes which can be further developed in later grades. If water is cooled enough it can change to ice.

You may want to ask around your school before purchasing. You will need to purchase two sets of 100 to have enough for the second part of the lesson, which will use a total of 145 cubes. Print out and ...

The Big Bad Wolf isn't so bad after all — at least, according to the opinion of Reagan Elementary's second grade students.