Here's
an idea to try with students who have trouble with abstract
concepts, and who might benefit from a more visual approach.
(Algebra Tiles can be
useful for demonstrating solutions of equations.) 
2. 
Solve
for x: 2x  3 = x + 2

3. 
Solve
for x: 4(x + 2) = 2x + 10

4. 
Solve
for x: x + 3 = 11  3x

