Engage Grade 4 learners in a hands-on paper roller coaster engineering challenge. Students design, build, test, and improve a marble track while exploring gravity, force, speed, measurement, and the engineering design process.

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Mission: Build a Paper Roller Coaster

Materials Needed

Paper or index cards
Masking tape or clear tape
Scissors
Small marble or toy ball
Books or blocks for support
Pencil and paper for planning
Ruler
Timer or stopwatch, optional

Lesson Overview

Grade: 4

Time: 60–75 minutes

Subject Areas: Science, engineering, math, and writing

Real-World Connection: Engineers design roller coasters by testing how height, speed, curves, and gravity affect movement.

Learning Objectives

By the end of the lesson, the learner will be able to:

Explain how gravity helps an object move down a ramp.
Design and build a paper track with at least three sections.
Test the track, record results, and identify one improvement.
Use measurements and observations to explain why the marble moved successfully or stopped.
Communicate the design process using a drawing and a short explanation.

Success Criteria

A successful project includes:

A track with at least one hill, one turn, and one straight section.
A marble that travels through most or all of the track.
At least two recorded test results.
One design change based on evidence from testing.
A clear explanation using the words gravity, force, speed, and design.

Introduction: Hook and Objectives

Hook: The Roller-Coaster Challenge

Ask:

“How can you make a marble travel from a high point to a low point without pushing it after it starts?”

Invite the learner to predict:

Will a taller starting point make the marble move faster?
What might happen if a turn is too sharp?
What could make the marble fall off the track?

Explain:

“Today you will become an engineer. You will design, build, test, and improve a paper roller coaster. Engineers do not expect their first design to be perfect. They test their ideas, learn from problems, and make improvements.”

Vocabulary

Gravity: A force that pulls objects toward Earth.
Force: A push or pull that can change an object's motion.
Speed: How fast something moves.
Design: A plan for making or building something.
Test: A careful trial used to find out how well something works.

Body: I Do, We Do, You Do

Part 1: I Do—Teacher or Parent Demonstration

Time: 10 minutes

Make a simple paper ramp while the learner watches.

Fold a sheet of paper lengthwise to create a shallow track.
Use tape to hold the sides in place.
Raise one end with a book.
Place the marble at the top and release it without pushing.
Observe what happens.

Think aloud:

“The marble moves downward because gravity pulls it toward Earth. If the track is too flat, the marble may not move very far. If the track has a sharp turn or a gap, the marble may fall off.”

Quick Check

Ask the learner to answer verbally or in writing:

What force makes the marble move downward?
Why does the marble usually move faster when the ramp is steeper?
What are two problems that could stop the marble?

Part 2: We Do—Plan the Roller Coaster

Time: 10–15 minutes

Work together to create a plan before building.

Choose a starting height using books or blocks.
Draw a track that includes:
- One hill or ramp
- One turn
- One straight section
Mark where tape, books, or blocks will support the track.
Predict where the marble will move fastest.
Predict where the marble might fall or stop.

Use this planning table:

Track Feature	My Plan	My Prediction
Starting height
Hill or ramp
Turn
Straight section

Part 3: You Do—Build, Test, and Improve

Time: 30–35 minutes

Challenge Rules

The marble must begin at the highest point.
The marble may not be pushed after it is released.
The track must contain at least three different sections.
The learner must complete at least two tests.
After testing, the learner must make at least one improvement.

Building Steps

Fold paper into channels or strips that can guide the marble.
Connect pieces with tape.
Use books or blocks to raise sections of the track.
Check for gaps, weak tape connections, and sharp turns.
Place the marble at the starting point and release it.
Record what happened.
Change one part of the design and test again.

Test Record

Test	What Happened?	Where Did It Stop?	What Will I Change?
1
2
3

Think-Pair-Share or Discussion

If another person is available, discuss:

Which part of your track worked best?
Which part was most difficult?
What evidence showed that your improvement helped?

For a homeschool setting, the learner can explain the design to a parent, sibling, or imaginary engineering team. The learner may also record a short video demonstration or write a pretend engineering report.

Formative Assessment

Use these checks during the lesson:

Ask the learner to point to the highest and lowest points of the track.
Ask the learner to explain where gravity is acting.
Have the learner predict what will happen before each test.
Check whether the learner records observations rather than only saying whether the test “worked.”
Ask: “What specific change could make the marble travel farther?”

Summative Assessment: Engineering Explanation

Have the learner complete the following response:

“My roller coaster worked best when ____________________. Gravity helped the marble by ____________________. My biggest problem was ____________________. I improved my design by ____________________. I know the improvement helped because ____________________.”

Simple Rubric

Skill	Excellent	Developing	Needs More Practice
Science explanation	Clearly explains gravity and motion.	Explains part of the connection.	Needs help explaining the connection.
Design	Includes a hill, turn, and straight section.	Includes two required sections.	Includes fewer than two sections.
Testing	Completes and records at least two careful tests.	Completes tests with incomplete notes.	Needs reminders to test or record results.
Improvement	Makes a change based on evidence and explains it.	Makes a change but gives limited explanation.	Needs support choosing an improvement.

Differentiation and Choice

Support for Learners Who Need More Guidance

Begin with one straight ramp before adding turns and hills.
Provide pre-folded paper channels.
Use sentence starters such as “The marble stopped because...” and “I changed...”
Test one variable at a time, such as height or turn size.
Allow the learner to explain observations orally instead of writing every answer.

Extensions for Advanced Learners

Measure the track's total length and compare it with the distance traveled.
Time three trials and calculate the average time.
Investigate whether a taller starting point changes the marble's speed.
Design a track with a loop, bridge, or catch basin.
Write a persuasive explanation arguing why the final design is the most reliable.

Choice Options

The learner may present the project as:

A labeled engineering diagram
A written report
A short demonstration video
An oral presentation
A “roller-coaster company” advertisement

Conclusion: Closure and Recap

Ask the learner to complete these statements:

“Today I learned that gravity...”
“The most successful part of my design was...”
“One problem I solved was...”
“If I had more time, I would...”

Review the key ideas:

Gravity pulls the marble downward.
A higher starting point can give the marble more speed.
Curves, gaps, and weak supports can affect motion.
Engineers improve designs by testing, observing, and changing one or more features.

Exit Challenge