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Free printable coding worksheets for Computer Science Education Week in December, all unplugged: no computer needed. Follow and write arrow codes on a grid, turn left and right and follow if-then rules on snowy grids, repeat steps in loops and loops inside loops, sort numbers with if-then rules, find and fix the bug in a program, skate curves and figure eights with code, and grow a snowflake from a rule. Then go binary: send secret messages in 1s and 0s, add and subtract in base 2, store pictures and letters as bits and bytes, and double your way through the powers of 2. Every pack is free to download and includes an answer key.
