Up the River: teacher key

Bull Sharks, grade 3 edition, written for 3rd grade. A bull shark can swim in fresh water as well as in the sea. Learn where it lives and how its pups begin.

Read the book. Print this page for the key.

Questions and answers

1. How deep is the water where bull sharks are usually found?
   • Less than 30 metres (answer)
   • More than 3 kilometres
   • Only a puddle
2. When are bull shark pups born in the Gulf of Mexico?
   • December
   • April to June (answer)
   • Never
3. What is true about a bull shark's upper teeth?
   • It has no teeth
   • They are round
   • They are jagged triangles (answer)
4. Which bull sharks are bigger?
   • Females (answer)
   • Males
   • Pups
5. Why can a bull shark swim up a river?
   • It walks on land
   • It can swim in fresh water (answer)
   • It flies

Words

• pup: baby shark
• fresh: not salty
• estuaries: river mouths