56

Lesson 56 of 84 ยท Evolution

Simulationโญ 30 XP

Mass Extinctions Through History (Part 3)

๐ŸงชLab Brief #56

Evolution.

๐ŸŽฏ Your mission

Push the limits. See what changes.

โšก The twist

Nature loves to surprise the careful watcher.

๐Ÿคฏ

Mind = Blown

๐Ÿ”ฌ The more you look, the more nature shows you.

๐Ÿ”ฎ

Make a hypothesis first

Before you start: write down what you think will happen, and why.

What You'll Learn

Extinction occurs when the last member of a species dies. Mass extinctions have occurred several times in Earth's history, the most famous killing the dinosaurs 66 million years ago.

Key Words

  • heredity
  • allele

Steps

Step 1 โ€” Read

Read the introduction and identify the main idea of this lesson.

Step 2 โ€” Do

Extract DNA from a strawberry using dish soap, salt, water, and rubbing alcohol. Observe the stringy white substanceโ€”that's DNA!

Step 3 โ€” Observe

Look for patterns in your observations.

Step 4 โ€” Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What is an allele?

๐ŸŒ

Where you see this in real life

This shows up in your everyday life more than you'd think.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week โ€” even a tiny one.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's the most surprising thing you learned today?โ€

๐ŸŽฏ

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

๐ŸงฒShare card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

๐Ÿ–จ๏ธ

Checkout complete lesson on Evolution for 8th Grade

Get the full Evolution track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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Mass Extinctions Through History (Part 3) โ€” Evolution | 8th Grade Science | LittleActivity | LittleActivity