A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.
Blood
Blood has four main components:
- Plasma
- Fluid part of blood
- Carries carbon dioxide, hormones and waste
- Red blood cells
- Contain haemoglobin which carries oxygen
- Made in the bone marrow
- White blood cells
- produce antibodies and destroy harmful microorganisms
- Made in the bone marrow
- Platelets
Clump together to form clots
Protect the body by stopping bleeding
Blood under the Microscope
Red blood cells and white blood cells
Immune Cells Eating Bacteria (Phagocytosis)
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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