Blood components and clotting sim
Steer a stained blood smear under a microscope (×100 to ×1000 with oil) to find and name red cells, phagocytes, lymphocytes, platelets and plasma, then cut a small vessel and step through clotting in the book's order, and read the layers of settled blood.
Transport in humans · covers the O-Level, IGCSE, GCSE topic
What the sim shows
Model: magnification = ×10 eyepiece × objective (×10, ×40, ×100); field 18 mm ÷ objective; actual size = image ÷ magnification (1 mm = 1000 µm). Red cell 7–8 µm, phagocyte 10–12 µm, lymphocyte 7–10 µm, platelet 2–3 µm. Per mm³: red cells about 5 000 000, white cells 4 000–11 000, platelets 150 000–400 000. Values illustrative, from memory.
- The prepared blood smear: drag it under the objective
- The model tube: settled blood in three layers
Use it in your lessons
- Try it here: anyone can unlock 2 figures free, and a free account unlocks up to 5. Runs on a laptop, a Chromebook or a phone; nothing to install.
- Present it and share student links with the teacher plan, from US$5 a month, billed yearly.
- Put it on your own website or LMS for US$9, paid once, or every sim from US$29 a month.
Free guide: 12 practicals as sims, and how to run one in a lesson →
Need a version for your exact set-up? Have one made: US$49 a figure in an order of 5.
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