Save guides, add subjects and pick up where you left off with your BBC account. In algebra, letters are used to stand for values that can change (variables) or for values that aren’t known ...

Save guides, add subjects and pick up where you left off with your BBC account. In algebra, letters are used to stand for values that can change (variables) or for values that are not known ...

That’s the theory behind Project LEAP, an early algebra program developed by researchers ... re not solving equations or simplifying radical expressions, Blanton said. Instead, the lessons ...