Math

These concept doesn't come naturally to me.
Can I say that I hate these types of question? (above)
Well, I don't say it in front of the kids but I hate these types of questions. Totally. 

Don't believe everything you read.
Or rather, I should say-- process what you read, don't take everything at face value.
Every time you resist acting on your anger, you may or may not become calmer. It would be ideal to be calmer but become calm is just a facade. It may also mean that you're suppressing anger, letting it simmer and develop into long term resentment which is even worse than anger. under-current is worse than current. 

Meantime, our library helped me save $41. 
No need to buy books, just borrow from our up-to-date library =)