Free Printable WorksheetScienceGrade 3Science Curriculum3-LS3-1

3.25 Variation within a Species Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 3 Science worksheet provides structured practice on 3.25 Variation within a Species. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Variation within a Species - Which observation best describes how individuals of the same species vary in traits (size, color, behavior), and represent variation with simple charts. (NGSS 3-LS3-1)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 3

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 3.25 Variation within a Species skill assessments:

Problem 1Difficulty: Mastery
Use the planned chart of petal colors in one tulip species. A student claims, 'All tulips in this species are red.' Which conclusion is best supported by the chart?
AThe claim is correct because red is one of the colors
BThe claim is not correct because yellow and pink petals also appear in the chart
CThe chart proves tulips are not plants
DThe chart cannot show variation
Solution & Explanation:The chart shows red petals, but it also shows yellow and pink petals. That means the claim that all are red is not supported.
Problem 2Difficulty: Mastery
Which student's data collection plan would give the strongest evidence for within-species variation?
AMia measured leaf widths of 12 plants from one species
BLeo compared one fish with one bird
CAna measured one plant every day as it grew
DSam listed the names of classroom pets
Solution & Explanation:Mia collected one trait from many individuals of the same species. That is the best kind of evidence for within-species variation.
Problem 3Difficulty: Mastery
Use the planned bar graph of shell-length intervals in one snail species. Which interval has the most snails?
A1.0-1.9 cm
B2.0-2.9 cm
C3.0-3.9 cm
DAll intervals are equal
Solution & Explanation:The 2-3 cm bar is tallest on the graph, so that interval has the most snails.

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Frequently Asked Questions

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QIs this 3.25 Variation within a Species worksheet free for teachers and homeschoolers?

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 3 Science students. It aligns with educational standard 3-LS3-1 (Primary standard selected for prompt fields in this prompt cell: NGSS 3-LS3-1. Skill statement in this prompt cell: Which observation best describes how individuals of the same species vary in traits (size, color, behavior), and represent variation with simple charts. Associated standards listed with this skill in this prompt cell: NGSS 3-LS3-1. Use this prompt-provided wording as the supporting standard description for this workflow.).

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