Functions is an important concept in mathematics to grasp.
These sites, blogs and videos do an excellent job of explaining it visually and offer all these videos and more resources for free. Hope this helps!
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The Maths is Fun website offers a great post about functions. Here's a small screen grab of the introduction:
The article offers a long explanation of functions, including: input, output and their relationship; sets; the rules of functions; examples of when a relationship between numbers or sets is NOT a function; the vertical line test; finite and infinite sets; lots of the terms used for functions, including domain, co-domain and range, argument, variables, etc; ordered pairs; explicit vs implicit functions.
It ends with a few interactive online questions to test the learner's grasp of functions. Highly recommended!
Hope this was helpful! Do go to these websites for more in-depth studying and some interactive tests.
Maths study guides and practice papers on Parent24:
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- Real-life maths or abstract maths? Why abstraction is so amazing
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Which math or science concepts does your child need help with? Please let us know at email@example.com and we'll do our best to find expert material to help explain it.