This is a set of dinosaur themed great than, less than, equal to, lower than, higher than mats, number and symbol cards. These cards and mats can be used to explore the concept of greater than and less than. The mats come in four different cards, with a slight wording variation (to provide different vocabulary and practice). Some of the cards include figuring out if an amount, or a sum is greater than, or less than, or equal to 10, or 20. It also includes some blank cards for writing in higher amount sum cards. You could also create multiplication, addition, subtraction, division math problems and then have them solve and sort the sum amounts.