Fossils and History

Grade: 6

Duration: 50 minutes

Unit: Exploring Evolutionary Concepts

Lesson: 4 of 25

Standards Alignment

Next Generation Science Standards (NGSS):

MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, diversity, extinction, and change of life forms throughout the history of life on Earth.
MS-ESS1-4: Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth's 4.6-billion-year-old history.

Common Core State Standards (CCSS) Integration:

English Language Arts (ELA) - Literacy in Science

CCSS.ELA-LITERACY.RST.6-8.1: Cite specific textual evidence to support analysis of science and technical texts.
CCSS.ELA-LITERACY.RST.6-8.7: Integrate quantitative or technical information expressed in words with a version of that information expressed visually (e.g., in a chart or table).

Math (Data Interpretation Focus)

CCSS.MATH.CONTENT.6.SP.B.5: Summarize numerical data sets in relation to their context (used when reviewing fossil data patterns).

Learning Objectives

By the end of this lesson, students will:

Define fossils and explain how they form.
Describe what fossils reveal about Earth's history and past life forms.
Analyze fossil data to identify patterns in biodiversity and extinction.
Use rock strata diagrams to understand geologic time and Earth's history.
Practice citing textual and visual evidence from fossil-related texts and images.

Materials Needed

Projector and screen
Interactive whiteboard or chart paper
Fossil samples (real or replicas) or high-quality images
Rock strata layering diagram handouts
“Fossils and Earth's Past” brief reading passage
Fossil data chart (number of fossils by era/type)
Science journals or notebooks
Colored pencils or markers
Exit tickets

Lesson Activities

1. Engage (5 minutes)

Hook: Display a striking fossil image on the board (e.g., a trilobite or dinosaur imprint).
Ask students: “What do you think this object tells us about Earth?”
Invite 2-3 students to share quick guesses.

Purpose: Stimulate curiosity and activate prior knowledge.

2. Explore (10 minutes)

Present a short, animated video or vivid slideshow explaining:
- What fossils are
- How fossils form (brief mention of permineralization, molds, and casts)
Show real fossils or images and allow students to touch or closely observe them.
Pass out the “Fossils and Earth's Past” reading passage. Students read in pairs.

Support: Teacher circulates to assist with difficult vocabulary and guide comprehension, encouraging students to underline evidence in the text.

3. Explain (10 minutes)

Using the interactive whiteboard, display a simplified rock strata layering diagram.
Model how to interpret rock layers by explaining their association with different time periods and fossil types.
Lead a discussion about what fossils in various layers tell us about changes in life on Earth.
Together, analyze the fossil data chart: students note patterns of diversity and extinction (e.g., trilobites disappear after certain layers).

Academic language focus: “Extinction,” “diversity,” “geologic time scale.”

4. Elaborate (15 minutes)

Group Activity: Divide the class into 4 groups (5 students each).
Each group receives a different fossil sample/image and related rock layer data.
Task:
1. Identify the type of fossil and approximate era/geologic period.
2. Analyze fossil data to describe what this fossil reveals about life at that era.
3. Prepare 2-3 sentences citing evidence from the text and chart that support their conclusions.
Groups report findings briefly to the class, citing specific evidence.

Skills practiced: Scientific argumentation, text and visual evidence use, collaboration.

5. Evaluate (7 minutes)

Exit Ticket: Each student answers on a slip of paper:
- “What is one thing fossils tell us about Earth’s history?”
- “Cite one piece of evidence (from reading or data) to support your answer.”
Collect exit tickets for quick formative assessment.

6. Extend (Optional, Homework)

Have students sketch their own fossil or rock strata diagram in their science journal, labeling parts and explaining what their drawing reveals about a moment in Earth’s history.

Classroom Management Tips

Keep groups balanced to maximize engagement.
Use questioning techniques to scaffold students needing help.
Praise detailed evidence use to reinforce academic rigor.
Monitor time closely during group presentations to ensure smooth transitions.

Reflection for Teacher

After class, reflect on:

Were students able to cite textual and visual evidence effectively?
Did students grasp the concept that fossils provide clues about Earth’s history?
Were diverse learners able to participate fully? Consider adjustments for future lessons (e.g., additional visuals, vocabulary support).

This lesson integrates hands-on investigation, reading, and data interpretation supporting Common Core skills in ELA and Math, aligned with NGSS science standards to foster deep understanding of fossils and Earth's history for 6th graders.

Teaching Instructions