Forty flash cards, one for each number from 11 to 50, eight to a sheet. The front shows the number by itself. The back shows its word and the number in base-ten blocks: ten rods and ones in columns of five, so 34 is 3 rods and 4 ones. Print the pack double-sided and flip on the long edge: each back sheet is laid out mirrored, so every card's back lands behind its front. Printed one-sided, the backs make a second set to match with the fronts. The number is printed small in the corner of each back for sorting the cards.
Hold up a card for the class to read together, or deal a small pile to partners: one reads the front, the other turns it over to check the word and count the blocks. Pull out the cards a child misses into a "practice" pile and come back to those. For a game, lay the cards face down and take turns turning one over: read it right and keep it.
Go through five or six cards a day rather than the whole set. Mix in the tricky ones (13, 30, 31) and let your child check you by turning the card over.
This pack supports the following Common Core State Standards for Mathematics:
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
Flash cards for reading the numbers 11 to 50, with the number on the front and its word and base-ten blocks on the back. Children read each card out loud, then turn it over to check.
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