DragginMath: Drag Up for Blue Mode

Most of what you think of as algebra happens in Blue Mode.

To enter Blue Mode, drag a node up until it turns blue. When you need Blue Mode, you often get it just by moving a node that is lower in the tree onto a node that is higher in the tree: it almost happens by accident. But sometimes you must deliberately drag a node up into Blue Mode before dragging it back down to your intended target node. A common mistake in DragginMath is to simply drag something sideways into Purple Mode or Magenta Mode instead of up into Blue Mode and then sideways. To do a Blue Mode action, the node you drag must turn blue before you drop it.

DragginMath: Simplification
DragginMath: Replication
DragginMath: Rules of Signs
DragginMath: The Associative Property
DragginMath: The Distributive Property
DragginMath: Factoring
DragginMath: Solving Equations
DragginMath: Relations
DragginMath: Rules of Exponents
DragginMath: Substitution
DragginMath: Superposition
DragginMath: Sharing Factors