The unit begins with understanding factors, products, divisors, and how these numbers are related. Knowing their multiplication facts is assumed as we start the unit. To brush up on those facts (and to learn strategies for earning points), we played The Factor Game last week. If you haven't played it with your student, please do very soon.
This week will include The Product Game. Both games allow the student to think about how factors and divisors are just different ways of looking at what makes a number. Example: 2 x 5 = 10. 2 and 5 are factors of 10 (they can be multiplied together to find the product 10), but they are also divisors of 10. You can divide 10 by 2 or by 5 and get a whole number as the answer. 2, 5, and 10 also make a multiplication and division fact family.
We have also talked about:
PRIME numbers - numbers that only have 1 and the number itself as factors/divisors (5 is a prime number).
COMPOSITE numbers - numbers that have more factors or divisors than just themselves and 1 (10 is a composite number with factors of 1, 2, 5, 10).
SQUARE numbers - numbers like 4 and 9, which can be modeled with tiles to make a perfect square (2 x 2, 3 x 3).
These will all be on their first quiz, which is Thursday (8/27/15). Some problems on the quiz will require them to identify each kind of number and explain (with words) how they know.
This week will include The Product Game. Both games allow the student to think about how factors and divisors are just different ways of looking at what makes a number. Example: 2 x 5 = 10. 2 and 5 are factors of 10 (they can be multiplied together to find the product 10), but they are also divisors of 10. You can divide 10 by 2 or by 5 and get a whole number as the answer. 2, 5, and 10 also make a multiplication and division fact family.
We have also talked about:
PRIME numbers - numbers that only have 1 and the number itself as factors/divisors (5 is a prime number).
COMPOSITE numbers - numbers that have more factors or divisors than just themselves and 1 (10 is a composite number with factors of 1, 2, 5, 10).
SQUARE numbers - numbers like 4 and 9, which can be modeled with tiles to make a perfect square (2 x 2, 3 x 3).
These will all be on their first quiz, which is Thursday (8/27/15). Some problems on the quiz will require them to identify each kind of number and explain (with words) how they know.