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What Kindergarten Science Should Do

See our NGSS-by-grade STEM toy map for the full framework. For kindergarten specifically, NGSS expects:

  • K-PS2-1: Investigate pushes and pulls on object motion
  • K-PS2-2: Analyze data about object motion
  • K-LS1-1: Use observations about what plants and animals need
  • K-ESS2-1: Describe patterns of weather
  • K-ESS3-1: Use a model to represent needs/environments
  • K-ESS3-2: Communicate weather data over time

Each activity below maps to one of these standards.

K-PS2 (Motion and Forces) — 5 activities

1. Plasma Car Force Exploration

Kid pushes and pulls on a Plasma Car. The car moves forward. Changes in direction or speed come from changes in push/pull. Direct practice with K-PS2-1.

2. Ball Rolling on Different Surfaces

Roll the same ball on carpet, tile, grass, hardwood. Measure distance. Direct practice with K-PS2-1 and K-PS2-2.

3. Stomp Rocket Launches

Stomp Rocket Original — harder stomp = higher launch. Direct practice with variable force and measurable outcome.

4. Car-Track Ramp

Toy cars on a cardboard ramp at different angles. Measure distance traveled. Demonstrates: force of gravity and ramp angle.

5. Pushing Objects of Different Weights

Push a toy truck. Push the same truck loaded with blocks. Compare the effort. Demonstrates: force required scales with mass.

K-LS1 (Living Things) — 5 activities

6. Plant a Seed and Observe

Bean seeds in clear cups. Measure height each week. Draw observations. Demonstrates: plants grow over time with water + light.

7. Pet Observation (If Classroom Has One)

Watch classroom pet (fish, hamster). Document what it needs (food, water, shelter). If no classroom pet, a brief nature-walk observation works.

8. Tree Identification Walk

Walk outside; identify 3–5 different trees by leaf shape. Use a simple field guide. Demonstrates: diversity of plants + observation skills.

9. Bird Feeder Observations

Set up a bird feeder near the classroom window. Count what birds visit over a week. Demonstrates: animals need food; different species have different preferences.

10. Habitat Matching Game

Show pictures of animals and habitats. Kids match each animal to its home. Demonstrates: different living things need different environments.

K-ESS2 (Weather) — 5 activities

11. Daily Weather Journal

Every morning, the class draws and records the weather (sunny, rainy, cloudy, snowy, windy). Track for a month. Demonstrates: weather patterns over time.

12. Temperature Chart

Record outside temperature daily for 2 weeks. Graph it. Demonstrates: measurable variable that changes over time.

13. Rain Gauge

Clear container outside. Measure rainfall after storms. Demonstrates: measurement of a natural phenomenon.

14. Cloud Watching

Go outside; identify cloud types (cumulus, stratus, cirrus). Demonstrates: observation and classification.

15. Shadow Tracking on a Sunny Day

Mark a stick’s shadow every 30 minutes for a school day. Demonstrates: sun moves across sky (actually Earth rotates).

K-ESS3 (Human Needs and Environment) — 3 activities

16. Classroom Trash Audit

Over 3 days, collect classroom trash. Sort by category (paper, food, plastic). Count and discuss. Demonstrates: human impact on environment. See our Earth Day guide #1 for more.

17. Where Does Our Water Come From?

Trace classroom water from faucet back to source (tap → pipes → city water → reservoir/river). Demonstrates: human dependence on natural systems.

18. Growing Food vs Buying Food

Discuss: what if we had to grow all our food? Plant a classroom herb garden (basil is fast). Demonstrates: food production.

Cross-Cutting (2 activities)

19. Color Mixing With Paint

Red + blue = purple. Classic kindergarten activity, but reframe as science: mixing colors follows predictable rules. Demonstrates: systematic observation.

20. Sink or Float Tournament

Collection of classroom objects. Predict which sink/float, then test. Demonstrates: prediction + testing (early hypothesis-forming).

Kit-Based Additions

If budget allows, these kits enhance kindergarten science:

Classroom Management

  • Station rotations: With 20 kids, run 4 stations of 5 kids each. Rotate every 15 minutes.
  • Partner observations: Kids draw/describe what they see; partner checks.
  • Science notebook: Small notebook per kid, used for drawing observations (not writing — kindergarten writing develops variably).
  • Class discussion: After each activity, 5–10 minutes of “what did we observe?” builds the reasoning habit.

What to Avoid at Kindergarten

  1. Complex multi-step experiments — attention span mismatch
  2. Chemistry with significant reagents — save for age 8+
  3. Activities requiring fine motor precision — kindergarteners still developing this
  4. “Science experiments” that are actually demonstrations — kids should do, not watch
  5. Over-explanation. At 5, showing > telling. Let them observe and draw conclusions.

Research Context

Early-childhood science education research consistently supports hands-on observation at this age. Gopnik’s work on preschool causal reasoning documents that 4–6-year-olds engage with cause-and-effect at higher levels than adults often expect.1 The activities above scaffold this naturally — observable phenomena, clear variables, predictable outcomes.

The Bottom Line

Kindergarten science should be:

  • Hands-on, not watch-on
  • 10–20 minutes per activity
  • Observation + drawing > writing + abstraction
  • Multi-day patterns (weather, plants) work well for tracking
  • Classroom-scaled — activities for 20 kids at once

For the broader K–5 picture, see our NGSS-by-grade STEM toy map.

Activities aligned with NGSS K Performance Expectations and tested in classroom settings.

Footnotes

  1. Gopnik, A. (2012). “Scientific thinking in young children: Theoretical advances, empirical research, and policy implications.” Science, 337(6102), 1623–1627. ↩