Learning Resources Back in Time Dinosaur Counters (Set of 72). These modern, colourful counters are a great way to liven up a variety of maths activities. Ideal for developing counting skills, sorting and patterning, these soft rubber counters are wipe clean – perfect for hands-on use. Counters feature six different dinosaurs in six different colours (green, orange, red, blue, purple and yellow). Set of 72 dinosaur themed counters comes in a handy storage tub and includes an activity guide. Dinosaur counters measure 3cm H. Suitable for ages 3+