Downloadable Perplexing Puzzles for Grade Levels 3 to 4!. 24 fun & Perplexing Puzzles for Grade 3-4?s!. Download, Print & Play!. Challenge your students with interesting and fun math problems that engage and motivate learning through play.. - Children love the calculator activities on the number 7 & 8 Activity Cards.. - ?Counting Coundrum? on Activity Card 12 is another fun one for children to solve.. Great exercises for classroom group work!. Edx Education continually works with early education teaching expert Dr Paul Swan to create learning materials that help young minds learn & enjoy math www.drpaulswan.com.au