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# Number sense

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Aaron VanderYacht's presentation on learning numbers for his students.

He wrote a blog post explaining how he uses powerpoint at blog.tutorspree.com

Published in: Education, Technology
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### Number sense

1. 1. A (Short) History of Numbers<br />
2. 2. People have always needed to count<br />
3. 3.
4. 4.
5. 5.
6. 6.
7. 7. Three Hundred <br />Twenty<br />Six<br />
8. 8. Practice – we try<br />Six hundred thirty four<br />Eighty eight<br />Two hundred seven<br />Nine hundred sixty<br />
9. 9. Practice – you try<br />Five hundred seventy seven<br />Three hundred and one<br />Forty two<br />One hundred eighty<br />
10. 10. Numbers keep getting bigger…<br />Imagine a farmer had this many sheep…<br />392718327584<br />
11. 11. 392,718,327,584<br />ten<br />ten<br />one<br />one<br />ten<br />one<br />ten<br />one<br />hundred<br />hundred<br />hundred<br />hundred<br />Thousand<br />Million<br />Billion<br />
12. 12. Try it Out<br />Five thousand<br />Five thousand, two hundred<br />Five thousand, two hundred sixty one<br />Five thousand and eighty three<br />
13. 13. Try it Out<br />Seven million<br />Seven million and fourteen<br />Seven million, four hundred and ninety six thousand<br />Seven million, four hundred and ninety six thousand, three hundred and two<br />
14. 14. YOU Try it Out<br />Twelve thousand and one<br />One million, four hundred and seventy two thousand<br />Thirty nine thousand, four hundred and eight<br />One billion, seven hundred thousand and forty<br />
15. 15. Which number is bigger??<br />Use place value to figure out the biggest number!<br />2,000<br />4,000<br />20,000<br /> 4,000<br />2,000<br /> 400<br />2,876<br />4,321<br />20,123<br /> 4,678<br />2,121<br /> 489<br />
16. 16. Which number is bigger??<br />20,402<br />20,401<br />2,361<br />4,359<br />2,300<br />2,700<br />4,821<br />4,621<br />212,121<br />211,489<br />3,889<br />4,122<br />
17. 17. YOU try it…<br />834<br />843<br />
18. 18. YOU try it…<br />10,234<br />12,324<br />
19. 19. YOU try it…<br />8,094<br />8,081<br />
20. 20. YOU try it…<br />6,561,234<br />5,984,745<br />
21. 21. YOU try it…<br />45,782,091<br />45,091,782<br />
22. 22. REVIEW<br />Three hundred forty seven thousand, two hundred and seven<br />Write this as a number<br /> -- How did you know where to put the first 3? The last 7?<br />Where do we add a comma? Why?<br />Make a number that is bigger. How do you know?<br />Make a number that is smaller. How do you know?<br />