Balloon-Powered Cars

Unit Context

This is lesson 7 of 20 in the Year 1 unit "Past, Present and Future" addressing foundational social sciences concepts through hands-on engineering and design experiences, integrating STEM. The lesson centers on students engaging in the engineering process by designing and building balloon-powered cars, encouraging inquiry into forces, movement, and change over time.

Learning Objectives

Aligned to the NSW K-10 Humanities and Social Sciences (HASS) and Science and Technologies learning areas and achievement standards for Year 1, students will:

Identify and describe change and continuity in daily life through design and technology activities.
Develop questions and participate in guided investigations to explore how forces can move objects.
Plan and create designed solutions using a simple engineering process.
Collaborate effectively to share ideas, test designs, draw conclusions, and propose improvements.

Specific Curriculum Connections:

HASS Year 1 Achievement Standard: Identify continuity and change in significant aspects of daily life; develop questions; sort and record information; share observations with subject-specific terms.
Science Year 1 Achievement Standard: Describe how pushes and pulls change the motion of objects; pose questions; safely make and record observations; use everyday language to communicate observations and ideas about forces and motion.
Design and Technologies Foundation to Year 2: Create designed solutions; communicate ideas; follow steps using materials and equipment safely.

Lesson Duration

60 minutes

Class Size

2 students

Resources and Materials

Balloons (various sizes)
Lightweight wheels (e.g., bottle caps, toy wheels)
Straws
Chopsticks or wooden skewers (for axles)
Cardboard, paper, and craft sticks
Tape and glue
Scissors
Measuring tape or ruler (to measure travel distance)
Worksheet for drawing and labelling car design
Whiteboard or chart paper for discussion and vocabulary

Lesson Breakdown

Introduction and Engagement (10 minutes)

Connect to Prior Learning: Briefly revisit past lessons on "Past, Present and Future," highlighting how things change and stay the same (e.g., transport over time).
Introduce the Engineering Challenge: Explain that today students will become engineers designing balloon-powered cars that move using air.
Key Vocabulary: Introduce terms – push, pull, force, motion, design, engineer.
Show a simple demonstration of a balloon car, gently pushing a balloon-car model to illustrate motion caused by air.

Exploration and Planning (15 minutes)

Inquiry Questions:
How can air from a balloon make a car move?
What parts does a car need to move?
Design Planning:
Each student sketches their car design on the worksheet, labelling parts needed (balloon, wheels, axles, body).
Discuss how the engineering process involves planning before building.
Teacher Support: Guide students to think about how the balloon will push the car forward when air escapes.

Construction (20 minutes)

Each student builds their own balloon-powered car using provided materials, following their design sketches.
Teacher models safe use of scissors and helps tape or glue components as needed.
Encourage problem-solving — if a part doesn't work, how can they change their design?
Emphasise careful observation of construction and safety.

Testing and Observation (10 minutes)

Move outdoors or in a clear space.
Students release their balloon cars, observing how far and fast they move.
Use measuring tape to measure distance travelled.
Discuss what worked well and what didn’t.
Encourage use of vocabulary: "The air pushed the car forward," "The wheels went round," "My car didn’t go far because..."

Reflection and Sharing (5 minutes)

Each student shares what they learned about forces and motion.
Discuss how engineers change designs to make cars better.
Teacher helps students link this to the concept of change and continuity (how people create new ways to move from the past to now).
Record observations and drawings in a shared digital or paper portfolio.

Assessment and Feedback

Formative: Ongoing teacher observations during design, construction, and testing to assess students’ understanding of forces and the engineering process.
Student Work: Completed design sketches with labels; verbal explanations using engineering and force vocabulary.
Reflection: Ability to articulate what made their car move and suggest one improvement.
Feedback to be positive, specific, and encourage curiosity and iteration.

Differentiation

Scaffold for students who need help with fine motor skills during construction (e.g., adult assistance with scissors, taping).
Encourage extension for students able to explore variations (e.g., testing different balloon sizes or wheel types).
Use guided questioning and visuals for concept reinforcement.

Cross-Curricular Links

Literacy: Use of drawing and labelling supports literacy development; discussion promotes oral language skills.
Numeracy: Measuring distances for car travel supports early numeracy and measurement concepts.
Critical and Creative Thinking: Designing, building, testing, reflecting—all foster problem-solving and creativity.

Teacher Tips to Impress

Emphasise the engineering design process explicitly: imagine, plan, create, test, improve.
Use a simple engineering journal template for students to record each step with drawings and notes, promoting reflection and iterative thinking.
Connect to students' everyday experiences with toys and transport to embed relevance.
Introduce simple digital tools (like a tablet camera) to record car trials and review motion, reinforcing observational skills.

This lesson encourages young learners to explore change and continuity through hands-on construction, seeing firsthand how science and engineering shape our world today and into the future, directly aligned to NSW Curriculum Year 1 HASS and Science standards. It develops curiosity, foundational STEM skills, and social sciences understanding about how people and technology interact over time.

Teaching Instructions