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A Seed Delivery Model at Library Pond worksheet preview

Worksheet

A Seed Delivery Model at Library Pond

Compare bird-beak model tests and use evidence to show how an animal can move seeds from a plant to a new place.

Grade 2ScienceInteractive · Printable

Aligned to2-LS2-2

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 NGSS standard
  • Printable answer key
  • 14 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 2
Subject
Science
Question types
Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer, Drawing

About this worksheet

What students practice

  • Students model how an animal can move seeds from a plant to a new place.
  • Students compare model-test results to judge which design best shows seed movement.
  • Students identify what a seed-moving model shows and leaves out.

How to use

Read the library pond investigation together. Have students study both rounds of results before choosing and explaining a model.

Curriculum

NGSS standard covered

2-LS2-2

Model how animals move seeds around or pollinate plants.

Preview

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Name Date

A Seed Delivery Model at Library Pond

Use test results to model how a bird can move seeds to a new place.

Study the first test

Read the investigation and use the graph to answer the questions.

A Problem at the Pond

Behind Maple Street Library is a pond with a small berry shrub on one side and a grassy shore on the other. The library club wants to make a model of how a bird could move seeds. A bird might eat a berry at the shrub and later leave a seed in a different place. The model will not use real food or animals.

Students make paper berries with small seed tokens inside. They build three bird-beak designs: a flat scoop, a curved cup, and a narrow fork. Each design is attached to the same paper bird body. For each design, students make eight trips, carrying one seed token from the shrub mat each time. They move one design from the shrub to the far-shore mat. They count how many seed tokens reach the far shore. They use the same distance, number of tokens, and number of trips for each design.

The class calls a trip successful when a seed token reaches the far shore on the bird model. The test can show how well a beak design carries tokens. It does not show whether real pond birds choose berries or whether a seed later grows.

Successful Seed Trips: Round 101234567Flat scoopCurved cupNarrow forkBeak designSuccessful trips out of 8
1.

How many successful trips did the curved cup make in Round 1?   trips

2.
How many more successful trips did the curved cup make than the narrow fork in Round 1?
  • A. 2 trips
  • B. 3 trips
  • C. 4 trips
  • D. 11 trips
3.
The club tests a new beak design. Which plan makes its result fair to compare with the graph?
  • A. Use eight tokens, the same distance, and the same number of trips.
  • B. Use twelve tokens, the same distance, and the same number of trips.
  • C. Use eight tokens, a shorter distance, and the same number of trips.
  • D. Use eight tokens, the same distance, and twice as many trips.
4.
Circle the two actions that show the bird model moving seeds to a new place.

The bird model picks up a seed token at the shrub mat.A student colors the far-shore mat green.The bird model carries a seed token to the far-shore mat.Students count the tokens before the test.

5.
Sort each statement by what the model can show.
A beak design carries a seed token from the shrub mat.A seed token reaches the far-shore mat.A real bird chooses a sweet berry.A seed sprouts into a plant later.
The model can show thisThe model does not show this
6.
The students make a control test with seed tokens on the shrub mat but no bird model. What can this test help them check?
  • A. Whether the far shore has enough sunlight for plants
  • B. Whether the curved cup holds more tokens than a scoop
  • C. Whether real birds visit the pond in spring
  • D. Whether tokens move without a carrier in the setup

Build the model

Use the evidence to plan a model of an animal moving seeds.

7.
Draw a model that shows a bird moving seeds from the berry shrub to the far shore. Label the bird, shrub, seeds, and new place. Add an arrow to show the movement.
8.

In Round 2, how many successful trips did the curved cup make?   trips

The club repeats the test with fresh paper tokens and the same steps. In Round 2, the flat scoop makes 2 successful trips, the curved cup makes 6 successful trips, and the narrow fork makes 3 successful trips. Each design again starts with eight seed tokens.
9.
Which design has the strongest evidence for carrying seeds in both rounds?
  • A. The flat scoop, with 3 and then 2 successful trips
  • B. The curved cup, with 7 and then 6 successful trips
  • C. The narrow fork, with 4 and then 3 successful trips
  • D. The three designs, with equal results in both rounds
10.
Underline the two claims supported by the results from both rounds.

The narrow fork carried more successful trips than the curved cup.The curved cup carried more successful trips than the flat scoop.The tests show that real birds prefer curved beaks.The curved cup carried more successful trips than the narrow fork.

11.
The club wants the model to show a seed leaving the bird at the new place. Which change would help?
  • A. Make the pond mat a darker color.
  • B. Add more tokens to the starting shrub mat.
  • C. Remove a seed token from the bird at the far shore and place it there.
  • D. Make the paper bird larger before each trip.
12.
Sort each statement by whether the two rounds give evidence for it.
The curved cup had more successful trips than the flat scoop in both rounds.The curved cup had more successful trips than the narrow fork in both rounds.Real birds at the pond eat the same berries used in the model.Seeds from this model will grow on the far shore.
The two rounds support thisThe two rounds do not support this
13.
Which question would require watching real birds at the library pond instead of using this model?
  • A. Do pond birds carry seeds from the berry shrub?
  • B. Which beak design carried more tokens in Round 1?
  • C. How many successful trips did the curved cup make in Round 2?
  • D. What change shows a seed leaving the bird at the shore?
14.
Which beak design would you choose for the library display? Use results from both rounds and explain one part of the model that shows an animal moving seeds.

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