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Currently you are able to watch "How 2 - Season 4" streaming on Amazon Prime Video, Amazon Prime Video with Ads.
There are no options to watch How 2 for free online today in Canada. You can select 'Free' and hit the notification bell to be notified when season is available to watch for free on streaming services and TV.
How 2 is a world-famous children's program dedicated to science and general trivia. Three presenters sit around a table, and ask rhetorical questions such as "How way-out can I be?" (about pivoting and moments), "How can failure lead to fortune?" (about the invention of the Post-it note) and "How can lighting blow your socks off?" (the question says it all!).