divisibility-rules-for-3-4-6-8-and-9

# Interactive video lesson plan for: Divisibility rules for 3, 4, 6, 8 and 9

#### Activity overview:

I briefly review the easy divisibility rules for 2, 5, 10, and 100. Then I explain in detail, and with examples, the divisibility test for 3 (add the digits; if the digit sum is divisible by 3, so is the number) and the similar test for 9. The rule for 4 says that if the last digits of the number are divisible by 4, then so is the number itself. The rule for 6 is that if a number is divisible by both 2 and 3, then it is divisible by 6. For 8, I use a version stating that if half of the number is divisible by 4, then the number itself is divisible by 8.

This math lesson is meant for 5th or 6th grade, when students study factors, divisibility, and prime numbers.

If you enjoyed the video, please subscribe! Check out also my other videos on this channel or at my site www.mathmammoth.com/videos

Tagged under: 5th grade,math,divisibility,divisible,divisibility tests,factors,divisible 3,divisible 4,divisible 9,divisibility rule 3

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

## Ready to see what elsecan do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.

Quickfire

Carry out a quickfire formative assessment to see what the whole class is thinking

Discuss

Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices

Clip

Turn any public video into a live chat with questions and quizzes

### Spiral Reviews by Teachers and Digital Learning Coaches

@kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

@ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

@strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!