Mrs. Close's Math Update
Friday, October 11, 2019
It's been a busy week! Our focus over the last few days has been on factors, multiples, and categorizing prime and composite numbers. It's challenging for the students to list all the factors of a bigger number like 70. We have been using strategies to help decide if numbers are factors or not. For example, two is a factor of all even numbers, three is a factor of a number if the sum of it's digits is divisible by 3 (70 - 7+0=7; 7 is not evenly divisible by 3, so 3 is not a factor of 70), numbers that have 5 as a factor end in a 5 or 0. This process takes a lot of brain power. Kids with strong multiplication facts struggle less. Next week, Mrs. Coleates will introduce Math Olympiad (MO), which is more challenging problem solving opportunities! In addition, we will work with units of time, multiplicative comparisons, and the classification of triangles and quadrilaterals. Next fact quiz is Friday, October 18th!