Count on the Numberblocks One to Twenty to help little ones learn how to sequence numbers in the right order with the Numberblocks Sequencing Puzzle from Learning Resources. There are 10 double-sided Numberblocks jigsaw puzzles: 4 each for 1–5 and 1–10; and 2 for numbers 1–20. Each Numberblocks puzzle is colour-coded, and features a number line, a teaching tool that helps children compare numbers as they order them in the correct sequence. Perfect for learning through puzzle play at home or in the classroom! After playtime is over, pieces store inside the reusable packaging ready for next time.