## Wednesday, January 4, 2017

### DIVISIBILITY THINK - N - SORT ACTIVITY

Today is our 2nd day to be working with the divisibility rules. In class we had a quick discussion to make sure all students have a clear understanding of the rules and what is expected of them. Afterwards, each student was given a copy of the rules for their notebook to be placed on page 63 (page 65 7th block).

A number is divisible by ……..
2 – if the last digit of the number is even.
3 – if the sum of the digits makes a multiple of 3.
4 – if the last 2 digits makes a multiple of 4.
5 – if the last digit is a 5 or 0.
6 – if the number is divisible by both 2 and 3.
9 – if the sum of the digits make a multiple of 9.

10 – if the last digit is a 0.

Students were then given a note card with a number on it. Around the room I placed posters with categories I chose;
1. Divisible by 2, 3, 4, 5, 6, 9. & 10
2. Divisible by 2, 5, & 10
3. Divisible by 2 & 4
4. Divisible by 2, 3, 4, & 6
5. Divisible by 2, 3, & 6
6. Divisible by 3 only
7. Divisible by 5 only
Students were then instructed to find their correct location in the room. I used this activity as a quick formative assessment to see how well they are understanding the rules.

There will be an assessment on Friday.

The activity we did can be found at :Teachers Pay Teachers