This website explains scalars and vectors. It also explains the similarities and differences between the two. I found this website very useful because it showed me how do identify scalars and vectors and how to show them on a graph.
Newton's laws of motion are still applied to everyday scenarios today! This website gives definitions and examples of Newton's laws of motion. It also explains the history of each law.
This extremely helps for when you need help distinguishing the differences between science or pseudoscience (which is "fake science"). This is a more reputable source because it is from Stanford, which is a great college.
This website helps with everything you need to know about Eratosthenes. It teaches you about his important accomplishments as a scientist. This website also teaches you about all of his famous experiments that led us to where we are in science today.
This video from KhanAcademy is convenient when learning about balanced and unbalanced forces. The video goes over everything you need to know about the two and what the differences are between the two.
This video goes over the steps in the scientific method. The video helps you learn the names of each step and explains what each of the steps teaches. It also gives you examples which I find extremely helpful.