th
Small Group Lessons : Number Theory
 Arrays
 OBJECTIVE : To review rectangular arrays and the use of multiplication number models to represent such arrays.
 Factor Pairs
 OBJECTIVE : To provide a review of the meanings of ‘factor’ and ‘product’; and provide opportunities to factor numbers and develop automaticity with multiplication facts.
 Divisibility / Divisibility Rules
 OBJECTIVE : To introduce divisibility rules for division by 2, 3, 5, 6, 9, and 10; and how to use a calculator to test divisibility by a whole number.
 Prime and Composite Numbers
 OBJECTIVE : To Introduce the classification of whole numbers as either prime or composite.
 Square Numbers
 OBJECTIVE : To introduce square numbers and the exponent key on a calculator.
 Un-squaring Numbers
 OBJECTIVE : To introduce the concept of square roots; and the use of the square-root key on the calculator.
 Factor Strings
 OBJECTIVE : To review equivalency concepts for whole numbers; and to introduce factor strings and prime factorization.
Independent Station Work : Review and Practice
 Algorithm Project 1 (Student Math Journal, p. 1P & 2P)
 Factors and Multiples
 Magic Square and Heterosquare Arrays
 Divisibility Rules
Independent Station Work : Choice (Pick at least 3)
 Play Factor Captor Game (Student Reference Book, p. 271)
 Play Multiplication Top-It (Student Reference Book, p. 294-295)
 Play Factor Bingo (Student Reference Book, p. 270)
 The Sieve of Eratosthenes (Project Master, p. 375-376)
 Create a New Multiplication Game