Birds
https://www.audubon.org/news/get-know-these-20-common-birds
http://www.ofo.ca/ofo-docs/Ontario_Common_Backyard_Species.pdf
https://www.youtube.com/watch?v=DQ7r_Go00Hk
Mixing solutions to get coloured mixtures
https://learning-center.homesciencetools.com/article/color-change-chemistry/
https://www.youtube.com/watch?v=RGG2GNvpwA4
https://www.thoughtco.com/color-change-chemistry-experiments-606187
Time measuring devices
https://www.instructables.com/
https://www.natgeokids.com/uk/
https://www.youtube.com/watch?
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