Big and Small Worksheet

Big and Small with Dinosaurs

Preschool Size comparison (readiness) Aligned standard — coming soon

Find the big one! This preschool worksheet shows dinosaurs at different sizes, and a child spots the biggest. Weighing the sizes and picking the largest — which a T. rex, a stegosaurus and a raptor is the big one? — is the simplest size judgment there is, a comparison a child makes well before counting. Each pick sharpens a young child's eye for the bigger of two pictures.

Deciding which dinosaurs is bigger is concrete, two-way reasoning a preschooler can do with confidence. Setting two sizes against each other and picking the larger sharpens a child's comparison sense — the quick judgment of bigger and smaller. It is the simplest size call there is, repeated until a child reads which of two pictures is larger at a single glance.

Children feel clever spotting the bigger picture every time, and a finished big-and-small worksheet is a small win. When this is easy, compare the sizes in big and small with easter, or try big and small with forest creatures. You can also browse every big-and-small worksheet or the whole preschool collection — each sheet prints cleanly or plays online for free, and the more a child compares big and small, the surer their eye for size grows, one comparison at a time.

What's inside

  • 8 exercises
  • Answer key included
  • Print as PDF or play online — free, no sign-up

Updated May 7, 2026

Pictures on this worksheet

  • Diplodocus
  • Styracosaurus
  • Ichthyosaurus
  • Brachiosaurus
  • Ankylosaurus
  • Velociraptor
  • Therizinosaurus
  • Mosasaurus

Try it — interactive

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