doubling-and-halving-tricks-for-multiplication-tables

You can figure out any fact in the multiplication table of 5 by taking the corresponding fact in the TABLE OF 10, and taking HALF of that.

And, to figure out any multiplication fact in the table of 6, do the corresponding fact in the table of 3, and DOUBLE that.

Similarly, to find any multiplication fact in the table of 4, do the corresponding fact in the table of 2, and DOUBLE that.

These tricks are especially useful for students in 3rd grade, when they need to learn by heart all of the times tables.

We will also fill in a partial multiplication table near the end of this lesson.

Learn more: http://www.mathmammoth.com/lessons/multiplication_tables.php

Tagged under: Multiplication,Multiplication Table,math trick,doubling,halving,3rd grade,math,times tables

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

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

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

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.

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

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

Dr Ayla Göl
@iladylayla

A good tool for supporting active #learning.

The Team Up app is unlike anything I have ever seen. You left NOTHING out! So impressed!