3 sets of 20 piece challenge task cards--Keva Planks, K'NEX, and LEGO--bundled together for an almost 30% savings! All three of these challenges sets are all written to require only 20 planks, pieces, or bricks, which allows more students to be able to use the cards without needing as big of a set!These task cards are perfect for morning work, when students finish early, during indoor recess, at a center, in a makerspace, or other times you want students to have a fun, building, creative, or vis