•Two Articles for response•POW due next Wednesday•Lesson plan if you taught today

Due

Peer Teaching Two Articles

Cutting Corners

12”

9”

Squares are cut from a 9-by-12-inch piece of cardboard so the four flaps can be folded up. What

size squares should be cut so that the volume of the box is the largest possible?

Mark Driscoll’s “Geometric Habits of Mind Reasoning with relationships – actively looking for relationships within and between geometric figures and thinking about how the relationships can help your understanding or problem solvingGeneralizing geometric ideas – wanting to understand and describe the “always” and the “every” related to geometric phenomena - Does this happen every time? Why would this happen in every case?Investigating invariants – finding what about a situation changes and what stays the sameBalancing exploration and reflection – trying various ways to approach a problem and regularly stepping back to take stock

Draw a quadrilateral that has two right angles, but no pairs of parallel sides

Draw a trapezoid. Connect opposite vertices. Shade the left and right triangles. Compare the

areas of each.

Two vertices of a triangle are located at (4,0) and (8,0). The perimeter of the triangle is 12 units. What are the possible positions for the third vertex?

Construct quadrilateral ABCD. Connect the midpoints of the sides. What can you say about the new quadrilateral formed inside ABCD?

Assignments:• Article response (handed out

in class)• POW Wed• Start planning your peer

lesson