Scale / Balance Math Problems - video lesson
A balance gives us a simple model for equations in beginning algebra. In this lesson for 4th or 5th grade, I solve 14 different balance problems, starting from the most simple and advancing to some that have double scales. Students learn the principles of dividing both sides of the equation by the same number and removing (subtracting) the same amount of both sides of the equation.
A self-teaching worktext for 4th grade that covers multiplying by whole tens and hundreds, multi-digit multiplication in columns, order of operations, word problems, scales problems, and money problems.
Download ($5.10). Also available as a printed copy.
A self-teaching worktext for 5th-6th grade that covers simple equations, scales problems, expressions that involve a variable, the order of operations, long multiplication, long division, and graphing simple linear functions.
Download ($6.20). Also available as a printed copy.