Overview

Grade 6 Science Natural Selection & Biodiversity supports NGSS learning with 6 print-only PDF worksheets and PDF answer keys with rubric, designed for structured, multi-day instruction.

Students investigate how evidence from living things and Earth systems helps explain population change, adaptation, and biodiversity. Activities connect reading, organizing evidence, and making claims grounded in scientific reasoning so learners build confidence while moving from foundational concepts to applied explanations.

Included materials are aligned to Grade 6, Science, 6, {standards} and focused on core NGSS ideas related to biological evolution.

What's Included

• ✅ Tree Evidence Worksheet | NGSS Grade 6 Science Activity & Notes – Students analyze tree-based evidence to connect observations to evolutionary explanations.
• ✅ Population Dynamics Worksheet & Doodle Notes | NGSS Grade 6 Science – Students interpret population changes over time and use doodle notes to track variables.
• ✅ Natural Selection Worksheet & Doodle Notes | NGSS Grade 6 Science – Students connect traits, environmental conditions, and survival to explain natural selection.
• ✅ Fossil Patterns Worksheet | NGSS Grade 6 Earth Science Activity & Notes – Students examine fossil patterns as evidence that can support claims about past life.
• ✅ Biodiversity Patterns Worksheet | NGSS Grade 6 Ecosystems Activity – Students describe relationships between environments and biodiversity patterns.
• ✅ Grade 6 Adaptation and Speciation Worksheet | NGSS Science Activity – Students apply adaptation ideas to explain how new species can emerge over generations.

Skills & Standards

Across the bundle, learners build a progression of NGSS-aligned skills: using evidence to develop explanations, identifying patterns in data sets and diagrams, and modeling how cause-and-effect processes can change populations and biodiversity over time. Students practice analytical reasoning by sorting information, connecting claim-evidence-reasoning, and revising ideas when new evidence is introduced through each worksheet.

Instruction emphasizes crosscutting concepts such as patterns (e.g., population and fossil trends), cause and effect (environmental pressures shaping survival), and systems and system models (how organisms and environments interact). Disciplinary core ideas are addressed through the unit’s focus on biological evolution: unity and diversity, adaptation, and how evidence supports explanations for change in living things.

Teacher-facing alignment to {standards} is supported by prompts that guide students to produce evidence-based, testable explanations consistent with NGSS expectations. By the end of the set, students can apply the same reasoning routine to new contexts, moving from interpreting evidence (trees, population shifts, fossils) to explaining outcomes (natural selection, biodiversity patterns, and adaptation/speciation).

Perfect For

• Teachers seeking structured instruction
• Sub plans
• Homework or review
• Intervention or centers
• Assessment preparation

How to Use

Plan this unit for typical 1–3 weeks of instruction. Use the worksheets in sequence to support multi-day teaching: begin with a short warm-up that reviews “what counts as evidence,” then move into guided practice where students complete one section at a time while you circulate and confer. For assessment integration, use an exit ticket after key worksheets (Natural Selection and Fossil Patterns) to check whether students can link claims to evidence.

For additional scaffolding, have students use the doodle-note pages to organize trait/environment relationships and evidence sources, then finish with an end-of-unit review sheet or discussion prompt that asks students to summarize how adaptation and speciation connect to the evidence they analyzed.

Closing

Choose this Grade 6 Science Natural Selection & Biodiversity lesson bundle to streamline prep and support confident, evidence-based explanations throughout NGSS-aligned evolution learning.