Biological evolution and common ancestry take center stage in this Grade 6 Science learning stations resource, where students examine anatomical and molecular evidence to investigate how organisms are evolutionarily related. Rather than treating similarities between organisms as isolated facts, students consider how shared structures, vestigial features, and DNA similarities provide evidence of common ancestry and help explain branching patterns in phylogenetic trees.

Designed around the topic of Biological Evolution: Unity and Diversity, this resource gives teachers a structured way to organize classroom investigations into evolutionary relationships. Students work with station cards, record their thinking on a separate recording sheet, and bring their observations together during a concluding discussion.

Investigating Evidence of Common Ancestry

The scientific focus is on recognizing and comparing different forms of evidence that scientists use to investigate evolutionary relationships. Students explore the significance of homologous structures, vestigial features, and molecular similarities, then consider how similarities and differences can inform the branching patterns represented in phylogenetic trees.

The station-based format provides an opportunity to revisit these connected ideas as students move between cases. It emphasizes evidence-based reasoning: students must consider what observed similarities suggest about relationships among organisms rather than simply identify features in isolation.

What Is Included?

• Station cards: Provide the material students use at each station to investigate the lesson topic.
• Station recording sheet: Gives students a dedicated place to record information and observations as they work through the stations.
• Station wrap-up: Brings the investigation together and provides a closing activity for reviewing the evidence and evolutionary relationships considered.
• Teacher Guide in the Answer Key PDF: Includes learning objectives, teaching tips, discussion questions, and common mistakes to support instruction and review.

How to Use This Resource

Place the station cards around the classroom and assign small groups to different starting points. Students read the card at their station and record their work on their own recording sheets, keeping the station cards available for the next group. After a set interval, groups rotate until they have visited every station.

Finish with the station wrap-up and a class discussion. Invite students to explain how anatomical evidence and DNA similarities can support hypotheses about common ancestry, and how differences among organisms contribute to branching patterns in phylogenetic trees. The Teacher Guide provides discussion questions and teaching tips to help you address student reasoning and common misconceptions.

Who Is This Resource For?

This Grade 6 evolution activity is suited to science teachers introducing or reinforcing unity and diversity in biology. It can be used during classroom instruction, as a collaborative investigation, or as a review of evidence for evolutionary relationships. The included teacher guidance also helps educators prepare the activity and lead a focused discussion without having to develop the supporting prompts and teaching notes separately.

For teachers covering biological evolution, homologous structures, vestigial features, DNA evidence, and phylogenetic trees, this resource brings these connected concepts into one organized classroom station experience.