Did You Know? Animals Including Humans

Subject: Science | Year: 6

Name: _________________________ Class/Set: ____________ Date: ____________

• The Ultimate Road Trip: If you unraveled every single blood vessel in an adult human body and laid them end-to-end, they would stretch for over 60,000 miles (nearly 100,000 kilometres). This means your internal "plumbing" is long enough to circle the entire Earth more than twice!

• The Vanishing Bones: You were born with approximately 300 bones, but you will end up with only 206 as an adult. As you grow, many smaller bones—specifically those in your skull and spine—fuse together to create larger, stronger structures.

• Tennis Court Lungs: The internal surface area of your lungs is roughly the same size as a standard tennis court. This massive area, made up of millions of tiny air sacs called alveoli, is necessary to absorb enough oxygen to keep your trillions of cells alive.

• Bright Sparks: Your brain is a power-hungry organ that uses 20% of your body's total energy and oxygen, despite making up only 2% of your total weight. While you are awake, your brain generates enough electricity to power a small LED light bulb!

• The Super Pump: Your heart is the strongest muscle in your body and beats about 100,000 times every single day. Over an average lifetime, the human heart will pump enough blood to fill three massive industrial supertankers!

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⚠ TEACHER’S GUIDANCE

💡 Pedagogical Opportunities

• Model: Use the "Blood Vessel" fact to introduce the scale of the circulatory system. Explain: Although these vessels are incredibly long, they are microscopic in thickness (capillaries), which allows them to fit inside the body.
• Discuss: Use the "Vanishing Bones" fact to address the misconception that bones are "dead" structures. Highlight: Bones are living organs that grow, repair themselves, and fuse as we mature.
• Challenge: Ask students to calculate how many times their heart beats in a week or a year based on the "100,000 beats a day" figure to practice long multiplication.

🔍 Misconception Alerts

• Bone Loss: Ensure students understand that bones do not simply disappear; they fuse (join together). This is a vital distinction for Year 6 scientific vocabulary.
• Energy Source: When discussing the brain's electricity, clarify that this energy comes from the nutrients (glucose) and oxygen transported by the blood, linking back to the 'Animals Including Humans' curriculum regarding transport of substances.

🧪 Working Scientifically Link

• Measure: Have students find their resting pulse and then predict how many times their heart would beat during a PE lesson. This connects the "Super Pump" fact to primary data collection.