How Joints Connect Bones

About this printable How Joints Connect Bones science reading passage, NGSS-aligned (Grades 3-5)

This 250-word reading passage teaches fourth-grade students about joints and their role in the human skeletal system. Aligned with NGSS 4-LS1-1 and Disciplinary Core Idea LS1.A, the passage explains that joints are the places where two bones meet and allow the body to bend and move. Students explore real-world examples including knee joints, elbow joints, and shoulder joints to understand how different joints enable different types of movement. The passage uses simple, age-appropriate language and concrete examples that fourth graders can relate to, such as bending knees and swinging arms. Audio integration supports diverse learners by providing text-to-speech functionality. Accompanying activities include multiple-choice comprehension questions, writing prompts that ask students to explain and apply their understanding, and graphic organizers that help students organize information about joint structure and function. The simplified differentiated version provides the same core science content with shorter sentences and scaffolded support for students reading below grade level. Spanish translations of both versions ensure accessibility for English language learners. This comprehensive resource builds foundational understanding of how the skeletal system supports body movement.

Written by Workybooks TeamPublished by Workybooks

Sample passage and quiz from How Joints Connect Bones

Your body has more than 200 bones that work together to help you move and stand. Joints are the places where two bones meet. Joints connect bones and allow your body to bend and move in different ways.

Different joints help your body move in different ways. The knee joint is where your thigh bone meets your lower leg bones. This joint works like a hinge on a door. It lets you bend your leg so you can walk, run, and sit down. The elbow joint connects the bones in your upper arm and lower arm. Like your knee, it bends in one direction so you can lift things and feed yourself.

Some joints can move in more ways than others. Your shoulder joint is special because it lets your arm move in many directions. You can swing your arm forward and backward, lift it up and down, and even move it in a complete circle. This is different from your knee or elbow, which can only bend one way.

Joints are very important for everyday activities. Without joints, your skeleton (all the bones in your body) would be stiff like a statue. You would not be able to walk, write, or even turn your head. Joints give your body the flexibility (ability to bend and move) it needs to do all the things you do every day.

Interesting Fact: The human body has about 360 joints! The place where you have the most joints is in your hands and feet, which is why your fingers and toes can move in so many different ways.