Estimating+is+NOT+like+guessing!

Estimating is something TOTALLY different from guessing! It is NOT "smart" guessing, or "educated" guessing
 * **Guessing** || **Estimating** ||
 * totally depends on luck || depends on thinking ||
 * cross your fingers || make sense ||
 * you CANNOT learn how to get luckier || you CAN learn to get better at this skill ||
 * use good luck || use facts that you know ||
 * no facts are needed || must have facts ||
 * no thinking is needed || must think ||
 * getting close is worthless || getting close counts as correct ||
 * a guess is either exactly right, or it is totally wrong || estimating between two numbers could be valuable ||
 * a guess must use all the correct place values || an estimate could still be useful with some place values left at zero ||