Mental Dividing Speed and Accuracy Patterns Random Slides 2-9 Teachers Use these experiences with whole numbers in any order to suit student needs. The experiences should be repeated many times across the year. Where possible, coordinate your language (and student language) to the actions occurring onscreen. Hints To use the pointer pen option to write numbers as provided by students: Click Slide Show. Right click mouse. Select Pen. To start at a specific slide: Click on Slide Show. Scroll to the Slide you want. Click From Current Slide.

4 8 12 18 20 14 2 16 6 10 2 2 4 6 9 10 7 1 8 3 5 Teacher: This activity is about speed and accuracy. It would be useful to have a timer/stopwatch available. Say: We going to divide numbers in the blue top row by a number that will appear in the pink box. As soon as you see the number appear in the pink box start calling out the answers to go in each of the empty boxes. Say: You should be able to call out the answers in about 25 seconds. Click to reveal the divisor. The student calls out the answers. You can click to show each answer as it is called or wait until all answers have been called and then click to reveal the answers.

6 12 27 18 15 21 30 24 3 9 3 2 4 9 6 5 7 10 8 1 3 See slide 2.

4 16 24 40 28 8 32 36 12 20 4 1 4 6 10 7 2 8 9 3 5 See slide 2.

15 25 5 10 35 30 45 40 20 50 5 3 5 1 2 7 6 9 8 4 10 See slide 2.

36 42 12 24 48 30 54 60 6 18 6 6 7 2 4 8 5 9 10 1 3 See slide 2. Teacher: Give students a target time of about 20-25 seconds for the 6, 7, 8, 9x tables

14 28 42 70 7 21 49 56 35 63 7 2 4 6 7 1 3 7 8 5 9 See slide 2.

24 16 32 80 40 56 8 48 64 72 8 3 2 4 10 5 7 1 6 8 9 See slide 2.

90 27 54 18 45 9 63 36 72 81 9 10 3 6 2 5 1 7 4 8 9 See slide 2.