Grade 2 Science Week 18 | Teacher Guide

Grade 2 | SCIENCE

WEEK 18 • TEACHER GUIDE AND ANSWER KEY • DAYS 86–90

Read each lesson aloud with the child and model the worked example before practice. Do not show this key during practice. Accept oral, drawn or written answers where the child cannot yet write the whole answer. On Day 90, read aloud if needed but give no hints.

Week 18 Student Textbook | Week 18 Practice Workbook | Week 18 Teacher Guide | Week 17 Student Textbook | Week 19 Student Textbook | Grade 2 index


Day 86: Alabama’s Land from North to South

Standard: Grade 2 Science Standard 8, 2.8

Practice record: Alabama places and landforms, printed on the Week 18 Practice Workbook.

Worked example: Which landform is low land between hills or mountains? Worked answer: A valley.

  1. A plain.
  2. Higher.
  3. The land in the north is higher than the land near the coast, because water flows downhill from high land to low land.

Teaching note: Show a physical map of Alabama if you have one; brown and tan colors in the northeast show higher land.


Day 87: Kinds of Water in Alabama

Standard: Grade 2 Science Standard 8, 2.8

Practice record: Bodies of water, printed on the Week 18 Practice Workbook.

Worked example: Which is bigger: a stream or a river? Worked answer: A river.

  1. The Gulf.
  2. A mix of fresh water and salt water.
  3. A lake has land all around it and its water is mostly still. A river is moving water that flows across the land toward a lake, bay or ocean.

Teaching note: See the History Teacher Guide, Day 92, for the two names of the Gulf in use today.


Day 88: Reading a Model of the Land

Standard: Grade 2 Science Standard 8, 2.8

Practice record: A relief model of Alabama, printed on the Week 18 Practice Workbook.

Worked example: On a relief model, one part is raised high and bumpy. What landform does it probably show? Worked answer: Mountains.

  1. In the northeast corner.
  2. A river (the Tennessee River).
  3. Like: it shows the mountains, river and flat coast in the same places as the real state. Different: it is much smaller, it is made of clay or plastic, and its water does not flow. Accept one likeness and one difference.

Teaching note: If a relief map is not available, press a crumpled sheet of paper flat in one part and leave another part bumpy to show high and low land.


Day 89: Hands-On: A Land Model from Mountains to the Bay

Standard: Grade 2 Science Standard 8, 2.8

Worked example: In a model, water is poured on top of a hill. Where will it go? Worked answer: Down the hill to a lower place.

  1. Toward the bay.
  2. Answers vary, such as a smooth, flat layer of sand or soil.
  3. The bay is the lowest part of the model, and water flows downhill, so it ran down the river and gathered there. Accept any answer about water flowing downhill to the lowest place.

Teaching note: An adult stays nearby during the water test. Use a pan with sides. Use the observation checklist below.

Hands-on task observation checklist (Build a north-to-south land model). Check each item you observe. Four or five items shows the child met the task goal; two or three means repeat the task with support.

  • ☐ Child drew a plan before building.
  • ☐ The model slopes from high mountains to a low plain.
  • ☐ The model has a river groove and a low bay.
  • ☐ Each part is labeled.
  • ☐ Child described where the water flowed and explained why.

Day 90: Independent Check: Land and Water

Standard: Grade 2 Science Standard 8, 2.8

Practice record: Land and water words, printed on the Week 18 Practice Workbook.

Worked example: What is a pond? Worked answer: A small, still body of water with land all around it.

  1. A stream.
  2. The Gulf.
  3. The hills are higher than the bay, because the river flows downhill from the hills to the bay.

Teaching note: Independent check: read aloud if needed, but give no hints.

Sources

Encyclopedia of Alabama, Northern Piedmont Upland (Cheaha Mountain, Alabama’s highest point)

Week 18 Student Textbook | Week 18 Practice Workbook | Week 18 Teacher Guide | Week 17 Student Textbook | Week 19 Student Textbook | Grade 2 index