📋 NGSS Standards: K-2-ETS1-2 — Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem.
🎯 Learning Objective
Students will build a first model of their nature-inspired design, compare it to their original plan, and explain how it is supposed to help the user.
💡 The Big Idea
A model is a first version. Engineers build models so they can learn what works and what needs to change. A first model does not need to be perfect, but it should still try to do the important job from the plan.
💡 Key vocabulary: model, build, test, compare, shape, function
🎯 Design reminder: Before building, ask: Who is this for, and what must it help them do?
📦 Materials
Paper
Tape
Scissors
Craft sticks or cardboard scraps
Pipe cleaners, string, or other simple classroom materials
Worksheet pages
🔬 Let's Get Started
Step 1 — Review the Plan (5 min) Look at the drawing from Lesson 3. Ask: "What is the most important part to build first?"
Step 2 — Build the Model (15 min) Use simple materials to build the first version. Remind students that it is okay if it does not look exactly like the drawing.
Step 3 — Compare Plan and Model (8 min) Ask: "What stayed the same? What changed? Which change helped your model do its job?"
Step 4 — Get Ready to Test (5 min) Talk about how they will know if the model helps solve the problem.
💬 Discussion Questions
🗣️ Question 1: "What part of your model is most important?"
💬 Students should identify the part that does the main job.
🗣️ Question 2: "How is your model the same as your drawing?"
💬 They can talk about shape, parts, or the job it is supposed to do.
🗣️ Question 3: "Why is a first model allowed to be imperfect?"
💬 Because engineers learn by building and then improving.
👩🏫 Parent/Teacher Notes:
Do not over-help. Let the child own the design.
Messy but thoughtful is fine.
Today is about turning a plan into something real.
🔑 PARENT/TEACHER ANSWER KEY — Detach before giving worksheet to students
Answers vary. A strong response shows a real connection between the planned design, the built model, and an idea for testing. Example: "My drawing had a wide scoop to help pick up blocks. My model still has the scoop, but I made the handle shorter so it is easier to hold. I will test whether it can pick up the block without dropping it."
