Math is my favorite subject to teach, which usually means I run on and on and bore any interest out of my son. So, I’m trying to back off a bit this year and let him work more on his own. He had a solid pre-Algebra year in 7th. This year’s focus is making sure we avoid the problems I see too often in high school students.
Working with positive and negative terms:
5 – 6 = 5 + -6 = -1
Correctly distributing and not loosing track of terms or signs:
(2x + 3)(x - 5) = 2x2 -7x -15
Being able to quickly factor a polynomial:
x2 + 5x + 4 = (x + 1)(x + 4)
Using dimensional analysis to check if the problem is correctly set up in the beginning: 20 miles/hour * 1 hour/60 min * 1 min/60 sec * 5280 feet/mile = 29.3 feet/sec