100 - no, wait, 120!! Multi-step riddles for all of the numbers on the 120 chart. A great tool for daily spiraled review, or incorporate it into your 100th Day celebrations! https://www.teacherspayteachers.com/Product/First-Second-Grade-Math-120-Riddle-Cards-for-the-120-Chart-191803
I want to be a . . . Prime Number Hunter! To Play: Use a hundreds chart. You are competing to cross out all composite numbers and circle all the prime numbers. Prime numbers = 3 points and Composite numbers = 1 point. Player with most points wins the game!
Students make "factor rainbows" to show their understanding of factor pairs and multiples for a whole number in the range 1-100. The lesson can be extended to discuss prime and composite numbers. CCSS 4.OA. Would you all like a printable of this?
All about prime and composite numbers. Includes 25 pages of cards from 1-100 labeled as prime or composite, 1 poster with the definitions of prime and composite, 1 poster reference sheet with the numbers 1-100 (primes are identified as prime), & 5 pages of worksheets with room for listing the factors of each number 1-100. ($) #primenumbers #compositenumbers