Young Scientists

Grade 2 Teacher Script

1 Hook: What is Technology? (00-07 min) Whole Group

Teacher Prompt: Hold up a pair of scissors and a zipper. "Did you know scissors and zippers are technology? Technology isn't just computers—it's anything designed by people to solve a problem!" Introduce the role of engineers.

2 Direct Instruction: The 5-Step Process (08-15 min) Slides & Fusion Text

Project Slide 3 (The Design Loop). Emphasize that when a tower falls, an engineer doesn't give up—they learn what to improve!

Key Mindset: "Failures are just clues! Testing tells us where to make it stronger."

3 Hands-On Challenge: Sturdy Tower Build (16-29 min) Partner Teams

Challenge Goal: Build a tower at least 6 inches tall using only index cards and tape that can support 1 bear counter for 5 seconds. Students must draw their blueprint on the recording sheet before receiving materials.

4 Testing, Improving & Gallery Walk (30-45 min) Whole Room

Students place their payload on top. If it sags or folds, partners fold cards into cylinders or triangles (folds add strength!). Complete exit reflection on their blueprint sheet.

Multilingual Support

Use the visual vocabulary cards showing picture examples of "Design", "Test", and "Improve" on the board.

Motor Scaffolds

Pre-cut tape strips and provide index cards with pre-creased fold lines (accordion or cylinder) for easier handling.

STEM Extension

Challenge fast builders to add a second payload counter or build higher than 10 inches using fewer cards.

Formative Assessment Check Can students explain one change they made after testing their prototype?

Blueprint Rubric Included

Solve It Engineers • Grade 2 Science Fusion Unit 1 Page 2 of 2

Design Under Limits • Grade 3 Science Fusion Unit 2 Page 1 of 2

Step-by-Step Instructional Delivery

Grade 3 Facilitation Script

1 Hook: Building a Dream Car (00-07 min) Whole Group

Teacher Prompt: "Imagine you are designing a brand-new electric sports car. You want it to go 200 mph (Criterion). But you only have $1,000 to build it (Constraint)! Can you do it?" Explain that real engineers always balance desires against restrictions.

2 Direct Instruction: Defining Terms (08-15 min) Slide Deck & Vocabulary

Display Slide 3. Teach memory trick: Criteria = Checklist of goals. Constraints = Cages that hold you in.

Science Fusion Anchor: "A trade-off is giving up one benefit to gain another that is more important."

3 The Cargo Bridge Challenge (16-31 min) Partner Teams

Criteria: Span a 6-inch gap between book stacks; hold a paper cup filled with 15 pennies for 10 seconds. Constraints: Max 10 craft sticks; max 12 inches tape; cannot tape bridge to books; 15-minute build time. Teams sketch their plan before picking up craft sticks.

4 Testing, Trade-offs & Debrief (32-45 min) Carpet Synthesis

Students place their cup at the center of the span and count pennies. When bridges sag, ask: "Did you make a trade-off between bridge length and beam thickness?" Complete exit ticket.

Multilingual Support

Color-code criteria in green (GO / Goals) and constraints in red (STOP / Limits) on the board and recording sheets.

Fine Motor Scaffolds

Allow binder clips instead of tape for connecting craft sticks, allowing rapid readjustment without tearing paper.

Advanced Extension

Add an economic constraint: each stick costs $1, each inch of tape costs $0.50. Teams aim for lowest cost per penny supported!

Formative Assessment Check Can students correctly label a given requirement as either a criterion or a constraint?

Exit Rubric Included

Design Under Limits • Grade 3 Science Fusion Unit 2 Page 2 of 2

Example Choice B:

Use sticks to make a longer, wider road, but it might only hold 15 pennies before bending!

Every great engineer makes trade-offs to succeed! 🧠