What an equation is
An equation says that 2 sides have the same value.
Equation: a math sentence with an equal sign (=). x: a letter for a number that you do not know yet.
Watch the scale find x
CAUTION: Do not change only 1 side. Do the same thing to both sides.
Try it
Get the box alone
- Pick an equation.
- Take 1 ball off a side.
- Keep the scale level.
- When the box is alone, open the box.
x + 1 = 4
Quick check
Answer 5 questions. You see your score at the end.