Ben Orlin's great and easy to understand books on maths, all 3 ones so far (2022/april):

1) Math games with bad drawings: simple, challenging and go-anywhere games and why they matter (2022):
Bestselling author and worst-drawing artist Ben Orlin expands his oeuvre with this interactive collection of mathematical games. With 70-plus games, each taking a minute to learn and a lifetime to master, this treasure trove will delight, educate, and entertain.
2) Change is the only constant: calculus in a madcap world (2019):
Change Is The Only Constant is an engaging and eloquent exploration of the intersection between calculus and daily life, complete with Orlin's sly humor and wonderfully bad drawings.
3) Math with bad drawings: illuminating the ideas that shape our reality (2018):
A hilarious reeducation in mathematics-full of joy, jokes, and stick figures-that sheds light on the countless practical and wonderful ways that math structures and shapes our world.

1) Math games with bad drawings: simple, challenging and go-anywhere games and why they matter (2022):
Bestselling author and worst-drawing artist Ben Orlin expands his oeuvre with this interactive collection of mathematical games. With 70-plus games, each taking a minute to learn and a lifetime to master, this treasure trove will delight, educate, and entertain.
2) Change is the only constant: calculus in a madcap world (2019):
Change Is The Only Constant is an engaging and eloquent exploration of the intersection between calculus and daily life, complete with Orlin's sly humor and wonderfully bad drawings.
3) Math with bad drawings: illuminating the ideas that shape our reality (2018):
A hilarious reeducation in mathematics-full of joy, jokes, and stick figures-that sheds light on the countless practical and wonderful ways that math structures and shapes our world.