Paper Pinwheel. Supplies

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1 Paper Pinwheel 1. Draw some lines. Measure and cut a square piece of paper.» Use the ruler and pen to draw lines from each corner of the paper towards the center. These lines should be half the size of the length of the square we used 2.5" lines on a 5"x5" square, but feel free to try different sizes!» Starting from the corners, measure 3/8" down the lines that you just drew and draw a small perpendicular line, about 1/8" long, on the right side of each. 2. Make some cuts. Cut along each line that you drew in step one.» Be careful not to cut all the way through to the edge of the paper when you cut the small perpendicular lines! Paper Bamboo Skewer Cork Pushpin Ruler Pen/Pencil Tape (optional, but highly recommended) 3. Construct the pinwheel. Lift a corner and roll it over the top and to the left towards the adjacent incision.» Tuck the corner underneath the adjacent slit and secure it by sliding it all the way down until the incisions intersect.» Repeat with the other three corners.» If you have tape, reinforce the pinwheel by taping down the tucked parts on the back. 4. Put it all together. Push the tip of the skewer into the center of the length of the cork.» Push the push pin through the center of the pinwheel and into the face of the cork. Leave a small amount of room for the pinwheel to spin!» Wiggle the pinwheel around just a little bit so that the hole is large enough for the paper to spin freely.» Test your new pinwheel by blowing on it!

2 Paper Pinwheels

3 Origami Pinwheel 1. Make some folds. Fold and unfold the square piece of paper in half diagonally so that it forms an X.» Unfold everything. Square piece of paper Bamboo Skewer Cork 2. Make more folds! Fold all four corners of the square to the center.» Unfold everything. Pushpin 3. Make even more folds! Fold the square in half (not diagonally).» Unfold everything.» Orient your square so that the line you just created is horizontal. 4. You guessed it... more folds. Fold the top and bottom edges of the paper to the horizontal line.» Do not unfold this!» Rotate your paper so that it is oriented vertically.

4 Origami Pinwheel, continued 5. Almost done folding! Grab the corners at the top that meet in the center and pull them down and out until they meet the horizontal center of the paper.» The folded paper should now resemble a house. 6. Repeat the previous step. Rotate the paper upside down and repeat the same fold that you just made.» The folded paper should now resemble a hexagon. 7. Make the last folds! Take the top left flap and fold it up towards the center.» Take the bottom right flap and fold it down towards the center. 8. Put it all together. Push the pointed end of the bamboo skewer into the cork.» Center your pinwheel over the face of the cork and secure it by pushing the push pin through the center. Don't push it all the way in!» Wiggle the pinwheel just a little bit to enlarge the hole and give it more room to spin.» Test your new pinwheel by blowing on it.

5 Paper Basket 1. Cut the strips. Turn one newspaper sheet sideways.» Make a hash mark every two inches.» Mark the opposite side in the same way.» Cut the strips by placing the ruler across two of the marks and cutting across with a craft knife.» Make 20 strips. 4-5 Newspaper sheets String or thread Paperclips 2. Fold the strips. Fold each strip in half, hotdog style (make sure that you don't cover up the side you want to show).» Open the strip.» Fold both edges into the center line you created on your first fold.» Fold along the center line you originally created. You should now have a strip that is roughly 1/2 inch wide. Craft knife Scissors Ruler Cutting mat or cardboard 3. Weave! Lay 10 strips vertically. The 5 on the left should have the crease facing the left and the 5 on the right should have the crease facing the right.» Weave a strip horizontally by going over, under, over, until you've gone all the way across. It might help to place a heavy object across the vertical strips to help keep them from moving.» Weave in the rest of the strips. Make sure that each half of the strips have the crease facing out. 4. Cut the string. Measure a length of thread that is a little over two times the circumference of the base.» Cut it.» Fold it in half.

6 Paper Basket, continued 5. Twine. Loop the string around a strip so that one half of the string is underneath the strip and the other is on top.» Twist the ends between the strip.» Switch the positions of the string ends so that the one on top now goes underneath the next strip.» Continue the twining process until you reach the beginning.» Tie the ends of the string together. 6. Weave the sides. Start with one of the sides. Split them in half so that you have 5 strips on one side and 5 on the other.» Cross the middle two strips.» Weave both halves together.» Tighten up the weaving.» Temporarily secure the woven side with a paperclip.» Weave together the remaining three sides the same way.» Weave the sides into each other so it makes one solid shape. 7. Make the edge. Start with any two strips that are next to each other and fold one strip over the other.» Weave this into the inside of the basket.» Now fold over the one next to it and weave that one into to the inside of the basket.» Continue this process until all of the strips have been folded into the inside. 8. Add finishing touches. Cut off the remaining edges of the strips from the inside.» Tighten up the strips by pulling each one from the base up through the top.» Continue this until you think it's tight enough.» Make the base flat by placing the basket upside down and over a container and placing a heavy object on top of it for several hours.

7 Solar-Powered Oven 1. Cut and line the box. Use the ruler and box cutter to cut a three-sided flap into the top of the pizza box lid. Make sure to leave at least an inch of border around the flap.» Glue aluminum foil to the bottom side of the lid and the insides of the box.» Try to make the foil as smooth as possible, like a mirror. 2. Add the plastic wrap. Stretch some plastic wrap across the opening on top of the lid of the box and tape it down.» Now add another layer of plastic wrap below the opening and tape it to the lid.» Do not tape any plastic wrap to the flap that is lined with foil. It should only be taped to the edges of the lid across the opening. Pizza box Aluminum foil Plastic wrap Black construction paper Glue stick Tape Ruler Pen/Pencil Box cutter 3. Add the construction paper. Line the bottom of the box with black construction paper and glue it down. Bamboo skewer or wooden dowel or any stick that is at least 1' long 4. Prop the lid up. Use your stick to prop the flap up. You might have to tape it to get it to stay.» Take your oven outside on a sunny day and try to heat things up! Put the food under the lid beneath the plastic. S'mores are a great place to start.