The journey from fertilisation to implantation animation
An animation that plays by itself on a loop: the journey from fertilisation to implantation.
Reproduction · covers the O-Level, IGCSE, GCSE topic
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.
More biology sims
- Monohybrid cross simChoose the parent pea plants, drag their gametes and the genotypes into a Punnett square, then breed 4, 40 or 400 offspring and compare what you get with the expected ratio.
- Plant tropisms and auxin simGrow a bean seedling with light from one side, on its side in the dark or turning on a clinostat, wait a day at a time, measure each tip's angle with a protractor, graph your readings and see where the auxin goes in the shoot and the root.
- Quadrats and transects simPlace a quadrat at random coordinates on a model field, count the daisies with the edge rule, work out the mean, density and estimated total from your own counts, then run a transect from a tree's shade into the open, reading a light meter and counting grass cover in a gridded quadrat.
- Reaction time (ruler drop) simLine up a 50 cm rule with the catcher's thumb, drop it, read the catch on a magnified scale, convert it to a reaction time, take ten repeats and a mean, spot the anomaly, and compare practice, distraction, caffeine and alcohol on a bar chart of your own means.
- Reflex arc simDrag a model hand onto a hot plate, step the impulse from receptor to sensory, relay and motor neurone to the biceps, name each stage as it glows, watch the transmitter cross a synapse, and compare the reflex time with a voluntary response.
- Sewage and fertiliser in a river (eutrophication) simTake before readings with an oxygen probe at five stations along a model river, drag fertiliser onto the field or open an untreated sewage outfall, step week by week through the bloom, the dying plants and algae, the multiplying decomposers and the falling oxygen, and plot the oxygen sag downstream against your before readings.