Children can learn and memorize basic subtraction facts with the help of FACT FAMILIES and NUMBER RAINBOWS. You can use these in kindergarten, grade 1 and grade 2 math.

When children have a subtraction problem, such as 7 - 5 = ____, it is easier to solve it using addition: since 5 + 2 = 7, then 7 - 5 = 2.

Two related additions and subtractions then form a fact family.

Number rainbows are a fun tool for children to practice subtraction facts. In the video I have a number rainbow for sums with 14. But you can make it for any sum. For example, to make a number rainbow for sums with 10, write the numbers from 0 to 10, then connect each pair of numbers with an arc if the numbers add to 10. Kids love using lots of different colors to make it pretty! Then you practice subtraction from 10, such as what is 10 - 2? What is 10 - 6? and so on. Children can trace the corresponding arc with their finger to arrive at the answer.

These ideas are also used in my book Math Mammoth Add & Subtract 2-A at http://www.mathmammoth.com/add_subtract_2A.php - it is available both as an instant download ($3.95) and as a printed book.

Tagged under: subtraction,subtraction facts,number rainbows,grade 1,grade 2,children,math,fact family

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!