Science 6th grade: From fertilisation to birth

A video with clear explanation about how fertilisation takes place.
                       Sperm Meets Egg: Weeks 1 to 3 of Pregnancy
Do you want to know more? Maybe these videos are too much!
                       An Embryo Forms: Weeks 4 to 8 of Pregnancy
                       Embryo to Fetus: Weeks 9 to 12 of Pregnancy
You can find all the videos on the web page, but here is the last one:
                       Your Baby Is Almost Here: Week 35 of Pregnancy to Birth
Source: www.parents.com

This one is easy, but can be helpful. Sexual reproduction: