Math Park DVDs, 2-4

This is a standards-based, interactive math series. Go to http://www.mathparkvideos.org/ to preview some titles. The DVDs are available for checkout. Each title is about 15 minutes.
Check out the thousands! (809990)
Easy to win : multiplying 10 (810000)
From greatest to least (809991)
Greater than? less than? (809989)
Introduction to three digit numbers (809986)
Multiplying mysterious number 9 (810006)
Sakes alive : multiplying by 5 (809994)
Standard and expanded form (809987)
Strategies : multiplying by 3 (810001)
Strategies : multiplying by 4 (810002)
Strategies : multiplying by 6 (810003)
Strategies : multiplying by 7 (810004)
Strategies : multiplying by 8 (810005)
Three digit numbers : those pesky zeros (809988)
Understanding ten thousands (809992)
What to do? : multiplying by 2 (809993)