Index Fossils and Rock Layer Alignment

This video tutorial guides students through completing the Explore Three activity in STEMscopes, focusing on index fossils. The teacher explains how to use Google Slides to align rock layers and identify index fossils, emphasizing the importance of the law of superposition. Students are instructed to find index fossils that appear in multiple samples but in the same layer. The video concludes with instructions on answering related questions and completing a CER (Claim, Evidence, Reasoning) task. Office hours are provided for additional support.

What is the main purpose of using Google Slides in this activity?

• To manipulate and align rock layer strips

• To write a report

• To create a presentation

• To watch a video

Why should you avoid using the present mode in Google Slides for this activity?

• It changes the slide order

• It disables the mouse

• It makes the slides look different

• It prevents editing the slides

What is the significance of aligning the rock layer strips vertically?

• To apply the law of superposition

• To create a pattern

• To match colors

• To make them look neat

What is the best way to ensure the rock layers are aligned correctly?

• Use a magnifying glass

• Use a ruler

• Guess the alignment

• Hold down the shift key

What should you do if the rock layers do not align perfectly?

• Resize the strips

• Ignore the misalignment

• Adjust the colors

• Rearrange the order

What defines an index fossil in this activity?

• A fossil that is the smallest

• A fossil that is the largest

• A fossil found in multiple layers but in the same position

• A fossil found in only one layer

How should you start identifying index fossils?

• From any random layer

• From the top layer

• From the middle layer

• From the bottom layer

What is the purpose of the CER process in this activity?

• To evaluate understanding of claims, evidence, and reasoning

• To draw a diagram

• To create a presentation

• To write a story

What should you do if you have questions about the activity?

• Search online

• Ask during office hours

• Ignore them

• Guess the answers

What is the main focus of the questions related to this activity?

• Questions 1 through 5

• Questions 6 and 7

• Questions 10 and 11

• Questions 8 and 9