Overview

Evolution & Classification in Grade 10 Science (TEKS) builds student reasoning with 10 TEKS-aligned worksheets on how organisms diversify and change over time.

What's Included

• ✅ Grade 10 Science | Phylogenetic Trees Worksheet | TEKS-Aligned – Students interpret branching patterns to explain relationships among organisms.
• ✅ Grade 10 Science | Transitional Fossils Worksheet | TEKS-Aligned – Students analyze fossil sequences to support claims about evolutionary change.
• ✅ Grade 10 Science | Speciation Processes Worksheet | TEKS Aligned – Students describe mechanisms that lead populations to become distinct species.
• ✅ Grade 10 Science | Genetic Drift Worksheet | TEKS-Aligned – Students connect random changes in allele frequencies to evolutionary outcomes.
• ✅ Grade 10 Science | Comparative Anatomy Worksheet | TEKS Aligned – Students compare structures to determine how evidence supports shared ancestry.
• ✅ Grade 10 Science | Adaptive Radiation Worksheet | TEKS-Aligned – Students model how new niches can drive rapid diversification.
• ✅ Grade 10 Science | Variation And Heredity Worksheet | TEKS-Aligned – Students use genetic variation and heritable traits to explain population change.
• ✅ Grade 10 Science | Molecular Evidence Worksheet | TEKS Aligned – Students evaluate DNA/protein evidence to infer evolutionary relationships.
• ✅ Grade 10 Science ‍| Fossil Formation Worksheet | TEKS Aligned – Students explain processes that preserve organisms and create the fossil record.
• ✅ Grade 10 Science | Evolutionary Synthesis Worksheet | TEKS-Aligned – Students synthesize multiple evidence sources into coherent, testable explanations.

Skills & Standards

Aligned to the TEKS framework, this Evolution & Classification bundle emphasizes crosscutting concepts such as patterns, cause-and-effect, and systems thinking, while reinforcing disciplinary core ideas in biological evolution. Students practice modeling and analytical reasoning by using phylogenetic tree diagrams, comparing anatomical and molecular similarities, and interpreting fossil evidence as data. Throughout the worksheets, learners strengthen evidence-based explanations by making claims about evolutionary relationships and supporting them with relevant observations (structural homologies, genetic/molecular comparisons, and fossil sequences). Specific skills include distinguishing types of speciation, explaining how genetic drift differs from other evolutionary mechanisms, connecting variation and heredity to population-level change, and reasoning about how environmental pressures can contribute to adaptive radiation.

Perfect For

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

How to Use

Plan this single unit for about 1–3 weeks depending on your class pacing. Use the phylogenetic and fossil worksheets early as sense-making warm-ups, then move into speciation, drift, and radiation as guided practice topics. A practical routine is to pair each evidence source (comparative anatomy, molecular evidence, transitional fossils, fossil formation) with an evidence-based writing or CER-style exit ticket, and finish with an end-of-unit review using the Evolutionary Synthesis worksheet to consolidate the unit’s big ideas.

Closing

Use these Evolution & Classification resources to help students build accurate, evidence-based explanations for how and why species change.