Ahava~Love Assembly

Grade 2 Science Week 6 | Student Textbook

Grade 2 | SCIENCE

WEEK 6 • STUDENT TEXTBOOK • DAYS 26–30

Read each lesson with a parent or teacher and study the worked example. Then answer the questions for that day in the Week 6 Practice Workbook.

Week 6 Student Textbook | Week 6 Practice Workbook | Week 6 Teacher Guide | Week 5 Student Textbook | Grade 2 index

Day 26: Flowers and Pollen

Many plants have flowers. Flowers make a fine powder called pollen. Pollination is moving pollen to the part of a flower that makes seeds. Some flowers can use their own pollen, but for many plants the pollen must come from another flower of the same kind.

After a flower is pollinated, it can make seeds. Often a fruit grows around the seeds, like an apple or a tomato.

Worked example: An apple tree’s flowers were never pollinated. What will be missing in the fall?

  1. Pollination lets flowers make seeds.
  2. The apple fruit grows around the seeds.
  3. Without pollination, the flowers do not make seeds or apples.

Worked answer: There will be few or no apples.

Day 27: Bees and Butterflies

Many animals help move pollen. They are called pollinators. Bees visit flowers to collect sweet nectar and pollen for food.

A bee’s body is fuzzy. Pollen sticks to the hairs as the bee crawls inside a flower. When the bee visits the next flower, some pollen rubs off. Butterflies also carry pollen on their bodies and legs as they sip nectar.

Worked example: Why does pollen stick to a bee better than to a smooth beetle shell?

  1. A bee’s body is covered in tiny hairs.
  2. The hairs catch and hold the powdery pollen.
  3. A smooth shell has nothing to hold the pollen.

Worked answer: The bee’s fuzzy hairs catch and hold the pollen.

Day 28: Other Pollinators

Bees and butterflies are not the only pollinators. Hummingbirds drink nectar from flowers with their long beaks, and pollen dusts their heads and feathers.

Some bats visit flowers at night, and pollen sticks to their fur. Moths, beetles and flies can carry pollen too. Different flowers attract different pollinators by their color, shape and smell.

Worked example: A long red tube-shaped flower is visited by a bird with a long beak. Which pollinator is it?

  1. The visitor is a bird.
  2. It has a long beak that reaches into tube-shaped flowers.
  3. Hummingbirds are birds that drink nectar from such flowers.

Worked answer: A hummingbird.

Day 29: Build a Pollinator Model

You can build a model to show how a pollinator moves pollen. A pipe cleaner or cotton swab can stand for a fuzzy bee. A little powder in paper cups can stand for pollen in flowers.

Touch the model bee to the powder in one cup, then touch it to a second, clean cup. If powder shows up in the second cup, the model shows pollen being moved.

Worked example: In a model, colored chalk dust stands for pollen. What could a fuzzy pom-pom stand for?

  1. The pom-pom will touch the chalk dust and carry it.
  2. In nature, a fuzzy animal carries pollen between flowers.

Worked answer: The pom-pom stands for a fuzzy pollinator, like a bee.

Day 30: Independent Check: Pollinators

Today you will read new information and answer on your own.

Use what you learned: what pollen is, how pollinators move it, and how models show it.

Worked example: What is pollination?

  1. Pollen is the powder flowers make.
  2. Pollination is moving pollen to the part of a flower that makes seeds.

Worked answer: Moving pollen to the part of a flower that makes seeds, often from one flower to another of the same kind.

Week 6 Student Textbook | Week 6 Practice Workbook | Week 6 Teacher Guide | Week 5 Student Textbook | Grade 2 index