Chunky Number Math Puzzle , One, two, three! Counting is great fun! But can you count all the way up to 20? This colorful puzzle provides children with their first introduction to numbers and includes mathematical symbols for more advanced learners. , , Chunky Alphabet Puzzle , A, B, C, D! Learning the alphabet is great fun! Can you learn the letters right through to Z? This colorful puzzle provides children with an introduction to capital letters to take their first steps towards reading and writing.