Students will be given a set of materials to use to design and build a divisibility gadget that communicates (or allows practice of) the divisibility rules and could be used to solve problems.  The gadgets will be given to parents in order to solve math problems created by the students.

Number, Number Sense and Operations	Grade 4 – Benchmark L: Use a variety of methods and appropriate tools (mental math, paper and pencil, calculators) for computing with whole numbers.
	Grade 5 – Benchmark F:  Apply number system properties when performing computations.