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Science · Grade 2

Plant Needs and Seed Dispersal

Learners plan a fair plant investigation, changing only the hours of light, then measure and compare plant heights to show that plants need light and water to grow. They discover how wind, water and animals carry seeds to new places, and use a cotton-swab 'bee' model to show how animals move pollen between flowers so plants can make seeds.

  • 3 lessons
  • About 80 minutes
  • Plants, seeds and pollinators check: 8 questions
  • Ways to answer: choose an answer, label a picture, match pairs, type a number, place on a number line and put in order
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What learners will discover

  • Plan and analyze a fair investigation that shows plants need sunlight and water to grow, measuring height in centimeters.
  • Explain how wind, water and animals move seeds to new places, and why that helps plants.
  • Use a model to show how animals move pollen from flower to flower so plants can make seeds.

Lessons

  1. A fair plant investigation 6 steps3 practiceabout 28 min
  2. Seeds on the move 4 steps2 practiceabout 25 min
  3. Pollinators at work 7 steps3 practiceabout 27 min
  4. Plants, seeds and pollinators check 8 questions at the end

Keep exploring

Games to practice with

  • Marble MountainLay straights, curves, drops and splitters to roll marbles down the mountain.
  • Habitat Builder 3DFind the right home for frogs, camels, polar bears and more.
  • Weather LabPredict the weather in a box, then run a fair test to find out why.

More 2nd grade science

Guide for grown-ups