Blog Archives

Virtual Urchin – Tutorials from Stanford

Here are some flash tutorials from the team at Hopkins Marine Station, Stanford. They make good use of the properties of the sea urchin’s gametes for studies and learning experiences:

Fertilisation and Development Lab

Fertilisation and Development

“Gametes of sea urchins yield exceptional experiences in the classroom; teachers and students alike are riveted by being able to observe fertilization, cell division and embryonic development. The gametes are easy to use, the developmental stages are readily seen with the microscope and the rapidity of fertilization and early cell divisions allows the student to ask questions and obtain answers within the bounds of a normal classroom schedule. The utility of urchins for inquiry-based science is unrivaled.”

Head on over there to have a go at some of their labs, including a neat microscope tutorial, practice with microscope measurements, fertilisation and development and a ocean acidification investigation.

Reproduction: Core and AHL

Here is the presentation for the Core content – Grade 9’s, you can look too, as we’re on this unit in HPD! There are tons of videos and animations out there about reproduction – many are linked in the presentations, so click on the shadowed images to watch them.

And here is the AHL presentation, including spermatogenesis, oogenesis, hcg, hormonal control of birth.

Standard Level students Essential Biology 6.6 Reproduction (Click4Biology)

Higher Level students Essential Biology 6.6 & 11.4 Reproduction (Click4Biology)

Here are the Pythons with their birth sketch:

And some BioEthics cases on IVF:

Australasian bioethics special: IVF

Vatican condemns IVF

Journal of Medical Ethics: State of the Debate

Octomom signs reality TV deal

Reproduction in Angiospermophytes

Here is the class presentation:

This is a quick topic, though it has some tricky bits in.

I’d recommend a review of transcription and translation when going through the photoperiodism section.

Now we’re finished with the unit, all of the presentations have been posted on the Plant Science Page.

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