Body Structures and Their Functions in Plants and Animals gives Grade 3 students focused science practice on how external and internal structures help living things survive and carry out important body functions.

Build Structure-and-Function Thinking

Students identify common external structures in plants and animals and explain how those structures support survival. They also examine internal structures such as the heart and digestive tract, connecting body structures to the functions they perform.

The resource also develops model-based thinking by asking students to use a model or drawing to show how structures are arranged and connected within body systems.

What Students Practise

• Identify external plant and animal structures and their functions
• Explain how internal structures support body functions
• Connect structures with survival and body-system functions
• Represent structural relationships using a model or drawing
• Read, respond to, and communicate ideas about body structures

Question and Activity Variety

Students work through multiple-choice questions, true-or-false statements, short-answer responses, a dialogue, matching, a cloze passage, a labeled diagram, a reading passage, and an essay. This combination gives teachers several ways to check factual knowledge, reading comprehension, scientific communication, and students' ability to explain structure and function.

Ready for Classroom Use

Use these Grade 3 science worksheets for independent practice, lesson review, classroom assessment, or reinforcement after teaching structures and processes in living organisms. The varied response formats make it useful when students need practice moving from identifying structures to explaining how they function.

Teacher Support Included

• Teacher Guide with learning objectives
• Teaching tips for classroom instruction
• Discussion questions to support scientific conversation
• Common mistakes to help teachers address misunderstandings

Designed around the NGSS framework and the topic From Molecules to Organisms: Structures and Processes, this resource gives teachers a practical way to reinforce structure-and-function concepts while students practise explaining how parts of plants and animals help living things survive.