Grade 2 | SCIENCE
WEEK 8 • STUDENT TEXTBOOK • DAYS 36–40
Read each lesson with a parent or teacher and study the worked example. Then answer the questions for that day in the Week 8 Practice Workbook.
Week 8 Student Textbook | Week 8 Practice Workbook | Week 8 Teacher Guide | Week 7 Student Textbook | Week 9 Student Textbook | Grade 2 index
Day 36: Pond Habitats
A pond is a small body of still, fresh water. Fresh water is not salty.
Frogs, fish, turtles, ducks, dragonflies and many tiny animals live in or near ponds. Plants such as cattails grow along the edge, and lily pads float on top.
Worked example: Is the water in a pond fresh or salty?
- A pond holds fresh water.
Worked answer: Fresh.
Day 37: Ocean Habitats
The ocean is a very large body of salt water. It covers most of the Earth. Alabama’s coast, near Mobile Bay and Dauphin Island, touches salt water.
Fish, whales, dolphins, crabs, sea stars and seaweed live in the ocean. Some ocean living things live near the shore, and others live in deep water.
Worked example: How is ocean water different from pond water?
- Pond water is fresh.
- Ocean water is salty.
Worked answer: Ocean water is salty; pond water is fresh.
Day 38: River and Stream Habitats
A river is a large stream of fresh water that keeps moving in one direction. A stream is a small river.
Alabama has many rivers, such as the Tennessee River in north Alabama. Fish, turtles, snails and river plants live in moving water. Some fish swim against the current to stay in place.
Worked example: What is the difference between a pond and a river?
- Pond water is still.
- River water keeps moving.
Worked answer: Pond water is still, and river water moves.
Day 39: Build a Habitat Model
A model is a small, simple version of a real thing. A habitat model shows the land, water, plants and animals found in one habitat.
A good model is accurate. Only include living things that really live in that habitat.
Worked example: Should a cactus go in a pond model?
- A cactus lives in a dry desert.
- A pond is wet, with fresh water.
Worked answer: No. A cactus belongs in a desert model.
Day 40: Independent Check: Water Habitats
Today you will answer on your own.
Use what you learned this week: ponds, rivers and oceans, fresh and salt water, and still and moving water.
Worked example: Is a river fresh or salty?
- Rivers carry fresh water.
Worked answer: Fresh.
Week 8 Student Textbook | Week 8 Practice Workbook | Week 8 Teacher Guide | Week 7 Student Textbook | Week 9 Student Textbook | Grade 2 index