How big were dinosaurs? Scientists in Scotland found dinosaur footprints and think they were made by a Cetiosaurus. This dinosaur was about 50 feet long and weighed more than 12 tons, as much as 2-3 elephants.! Just to picture this, look at your thigh, the part of your leg from your hip to your knee. That one leg bone on Cetiosaurus was 6 feet tall, taller than a lot of grownups! Wee ones: If you see 9 dinosaur footprints, what numbers do you say to count them? Little kids: How much taller than you would a dinosaur's 6-foot leg bone be? (You can round your height to the nearest foot.)  Bonus: How many Cetiosauri with all 4 feet on the ground could have filled 12 of those footprints? Big kids: If that dinosaur is 50 feet long, and half of that length is its tail, how long is its tail?  Bonus: Who weighs more, a 12-ton Cetiosaurus or a 20,000-pound truck? (Hint if needed: A ton equals 2,000 pounds.) Answers: Wee ones: 1, 2, 3, 4, 5, 6, 7, 8 ,9. Little kids: Different for everyone...subtract your height in feet from 6.  Bonus: 3 Cetiosauri. Big kids: 25 feet.  Bonus: The Cetiosaurus, since it weighed 24,000 pounds!