How Bike Parts Work Together

How Bike Parts Work Together Worksheet: Parts of a system (Grade 4 Science, TEKS 4.5D)

Students use a labeled bike picture and a short how it works box to decide if the bike could still move when a part is missing, then circle answers about what the chain and brakes do. The page teaches the idea first, so no prior lesson is needed, and every answer is on the page.

What's Inside

• A short teach box that defines a system
• A labeled bike picture with a how the parts work together box
• Part A: write Y or N for four missing or broken parts, first one done
• Part B: three circle the answer questions, first one done
• A raccoon guide with a hint that matches the answer key
• An answer key with answers marked in red, plus a short teacher note with what to watch for

How Teachers Use It

Read the teach box and the worked example together, then let students try Part A and Part B. It takes 8 to 10 minutes and prints clearly in black and white. The focus skill is examining the parts of a system and how they interact, part of TEKS 4.5D: examine and model the parts of a system and their interactions.

Why It Works

Each sheet uses familiar things like plants, bikes, ice, and food chains, so the big idea is easy to see. Questions are short, mostly circle or one line answers, and the reasoning is on the teacher key. Pair it with the other seven Grade 4 Big Ideas in Science sheets to cover patterns, cause and effect, scale, systems, energy and matter, structure and function, and stability and change.