Move a point on the grid

💡 How it plays and why it helps

Which number changes when a point slides up? Move a point on the grid asks that on every card. Point A starts somewhere between (1, 1) and (8, 8), moves 2 to 5 units right or up, and three ordered pairs are offered for where it lands. Ten cards make a round in this Grade 5 game, with numbers drawn fresh for each card, and your child taps one pair. Each tap is checked, and a hint is on hand.

A move along one axis changes one coordinate only. Right touches the first number, up touches the second, and the hint says exactly that. For (8, 6) moved 5 units up, the answer is (8, 11); the choice (13, 6) has slid the point right instead. The x stays put.

Some taps move everything. On that same card, (13, 11) is offered, both numbers raised by 5, as if the point had gone up and right at once. Ask, "Did the point go right at all?" Tracing the move with a finger on graph paper settles it. Then say, "You changed only the number that moved."