Facts+and+Factors


 * Overview of Unit**: This is a seventh grade unit in the Number Strand. This unit focuses on developing the student's understanding of the structure and nature of the base ten number system. It also extends and generalizes this understanding to other bases.
 * Section A**: This section focuses on building student knowledge of the base-ten number system and introduces students to exponential notation and scientific notation.
 * Section B**: The students investigate divisiblity rules through several real-life situations.
 * Section C**: Students develop an understanding of prime numbers, composite numbers, and factors. They use arithmetic trees and division models to factor numbers and the Sieve of Erostothenes to identify prime and composite numbers.
 * Section D**: Students learn how to square and unsquare numbers and are formally introduced to squaring and square roots. They learn to square simple mixed fractions using a rectangular model. This model is also used to multiply mixed fractions in this section.
 * Section E**: Students investigate exponential notation using powers of different bases and develop calculation rules for exponents. They are also introduced to the binary system (which they contrast with the decimal system reviewed in section A).

Play the [|factor game] Play a [|multiple game] Practice your [|factors] Interactive [|factor tree] Interactive [|Sieve of Erostothenes] Game: [|Find the Pattern] Interactive [|ratio table] [|connect 5]to practice your skills Rectangular [|model] for multiplying fractions Problem solving with [|sequences]