
4th Grade · Science
Internal and External Structures
Free printable 4th Grade science worksheet: Internal and External Structures. It practices structures (NGSS 4-LS1-1). For ages 9-10. Download the PDF, print it, or fill it in online.
Fill in or color online- Grade
- 4th Grade
- Subject
- Science
- Skill
- Structures
- Ages
- 9–10
- Standard
- 4-LS1-1
- Format
- A4 PDF · print or fill in online
About this worksheet
“Internal and External Structures” is sheet 20 of 27 in our free 4th Grade Science Worksheets collection, written for children aged 9–10. It focuses on structures.
In the set it comes after “Parts of a Wave” and before “Rock Cycle Basics”. Working through them in that order, one sheet a day, builds the skill a step at a time.
What this worksheet practices
4-LS1-1 · Next Generation Science Standards · Grade 4
From Molecules to Organisms: Structures and Processes
Children explore how the parts of plants and animals help them survive, grow and respond.
How to use this worksheet
- 1
Build a simple circuit with a battery, wire and bulb before the circuit sheet.
- 2
Tap out a message in Morse code with a flashlight after the patterns sheet.
- 3
Look for weathering around your neighborhood: cracked sidewalks, worn steps and tree roots.







