(by Mark O. with help from Sage the intrepid student dog) A gap in the path stretches too wide to cross. The only way over are two creatures standing at its edge. Each are built out of a stack of mismatched blocks. One is short and squat, the other tall and thin. Neither can lie down flat across the gap alone without leaving a dangerous, uneven step in the middle. The only way to make a solid bridge is to get the two creatures to exactly the same size first. Problem: Scaling before you...

(by Mark O. with help from Sage the intrepid student dog) A shapeshifting creature blocks the doorway, half-melted and lopsided, above which two equations float. The shadowy figure had been here first, trying to use one equation to solve the other, but didn't quite do it right. This left the creature mismatched and strange. A small cluster of kids drifts closer to watch as Sage tries to help the creature. As a reminder, substitution is a method for solving a system of equations with two...

After that last room, Sage and the kids have a basic understanding of Algebra. Now it's time to refine and master these algebraic concepts. A mist swallows them as they enter the new room. When it clears, Sage and the kids are separated, the kids in one tunnel, Sage in another. Each tunnel ends with a door. The kids' door reads a(b+c); Sage's reads ab+c. The equations must control where the doors lead, but the kids' door is sealed behind glass. Only Sage's equation is open, and only his...