Aaron VanderYacht's presentation on learning numbers for his students. He wrote a blog post explaining how he uses powerpoint at blog.tutorspree.com

1. A (Short) History of Numbers

2. People have always needed to count

7. Three Hundred Twenty Six

8. Practice – we try Six hundred thirty four Eighty eight Two hundred seven Nine hundred sixty

9. Practice – you try Five hundred seventy seven Three hundred and one Forty two One hundred eighty

10. Numbers keep getting bigger… Imagine a farmer had this many sheep… 392718327584

11. 392,718,327,584 ten ten one one ten one ten one hundred hundred hundred hundred Thousand Million Billion

12. Try it Out Five thousand Five thousand, two hundred Five thousand, two hundred sixty one Five thousand and eighty three

13. Try it Out Seven million Seven million and fourteen Seven million, four hundred and ninety six thousand Seven million, four hundred and ninety six thousand, three hundred and two

14. YOU Try it Out Twelve thousand and one One million, four hundred and seventy two thousand Thirty nine thousand, four hundred and eight One billion, seven hundred thousand and forty

15. Which number is bigger?? Use place value to figure out the biggest number! 2,000 4,000 20,000 4,000 2,000 400 2,876 4,321 20,123 4,678 2,121 489

16. Which number is bigger?? 20,402 20,401 2,361 4,359 2,300 2,700 4,821 4,621 212,121 211,489 3,889 4,122

17. YOU try it… 834 843

18. YOU try it… 10,234 12,324

19. YOU try it… 8,094 8,081

20. YOU try it… 6,561,234 5,984,745

21. YOU try it… 45,782,091 45,091,782

22. REVIEW Three hundred forty seven thousand, two hundred and seven Write this as a number -- How did you know where to put the first 3? The last 7? Where do we add a comma? Why? Make a number that is bigger. How do you know? Make a number that is smaller. How do you know?