Around that age, I read "The Heart of Mathematics", by Edward Burger and Michael Starbird. It's a really fun book which introduces a wide variety of math concep

Around that age, I read "The Heart of Mathematics", by Edward Burger and Michael Starbird. It's a really fun book which introduces a wide variety of math concepts while being amusing to read. https://www.amazon.com/Heart-Mathematics-invitation-effective-thinking/dp/1931914419 https://www.amazon.com/Heart-Mathematics-invitation-effectiv...