Welcome to Science Lesson Resources for Teachers and Parents!

 Microwaves are just light, only they are much bigger. Let's see how a set of wires can block or let through polarized microwaves. https://drive.google.com/file/d/10UZJ2Tbx_jMYZ27F70IqYrb0jyL1q5lp/view?usp=drive_link

  Turbidity is how hard it is to see through water. If a water is turbid, you cannot see through it, then it is not good for drinking. That's because turbidity means there are a lot of small particles. Some of them are pesky algae and bacteria! These small particles won't settle down even after few days. They are just not big enough to sink down because of gravity! Good that we can make them stick to aluminum hydroxide particles, and precipitate. This purification is called flocculation,  from Latin  floccus  "lock of hair, tuft of wool.  Let's see a video of this flocculation process! https://drive.google.com/file/d/1QWRcxW3sWbF0WKNp0MLZLBQqgHGTIIfN/view?usp=drive_link

 What is going on underground? There is hot magma! And in the very centre there is a hard solid core! Let's draw it! https://drive.google.com/drive/folders/1uIyl6kBr19e6f2bgamiM4WVc3IsxOyFc?usp=drive_link Each layer has subdivisions . Let's learn them. Finally, let's draw all the layers to scale 1:10 000 000

 This video about the `tree of life` phylogenetic tree is very useful. https://drive.google.com/file/d/1-dkh0fmU-X2BdCf0HtAx67qMiNih8aDB/view?usp=drive_link Chloroplasts from cyanobacteria Red, Green, and Brown Algae Mosses vs Vascular Plants. Xylem carrot Ferns - seedless plants, spores Gymnosperms - conifers, gingko Angiosperms - fruit plants Stamen/ male and carpel/ female Monocots Dicots, cotyledon  Wheat, rice, and corn - the three staple grasses! Rosids vs Asterids Poppies, and lotuses - archaic dicots, not rosids nor asterids