Draw completely around any circular object, such as a juice cup or a jar lid, using your pencil. The circle you draw will be slightly larger than the object you used as a guide.
Draw only halfway around the same circular object, and then remove the guide. Using your straight edge, draw a line that closes the half-circle. This is a half-moon shape.
Use your circular object again and draw halfway around, as you did for the half-moon. Move the form to the side slightly so that the line you drew seems to go through the middle of the cup or lid you used as a guide. Draw with your pencil along the opposite side of your guide until the new lines intersect with the ones you drew before. Erase the lines that extend beyond your football shape.
Draw halfway around your circular object, and then move your guide to the side away from the line you just drew. Draw another line along the edge of your guide object on the same side as your first line, and you have a crescent.
Count out three toothpicks, or broken spaghetti pieces of a similar length, and arrange them end-to-end, closing the triangle shape. Creating a model is a great way to visualize the object you want to draw.
Draw a circle using your circular guide object. Create a clock face on the circle by drawing a dot at the top edge of the circle and labeling it "12" and drawing a dot labeled "6" directly below it on the bottom edge of the circle. Fill in the other numbers in the clock face as well as you can, placing all dots on the edge of the circle and numbering outside the circle.
Draw a triangle by aligning your straight edge with the "12" and the "4" on your clock and connecting them. Draw another line from the "4" to the "8" and then from the "8" to the "12."
Create a square with four toothpicks, placing them end-to-end and closing the shape. Draw another clock face. Use your straight edge to connect the number "12" to "3," "3" to "6," "6" to "9" and then "9" to "12" again.
Create a model rectangle by extending your square on two opposing sides by adding another toothpick on each side, making it longer. Draw another clock face, but this time connect the following numbers using your straight edge: "1" to "5," "5" to "7," "7" to "11" and then "11" to "1" again.
Create a model pentagon by joining five toothpicks end-to-end and closing the shape. Draw another clock face. Connect "5" and "7." Because twelve is not divisible by five, draw a line from "5" to the midpoint between "2" and 3," and extend that line to the "12." From "12," draw a line to the point between "9" and "10," and complete the pentagon by connecting that point to "7."
Create a model hexagon by joining six toothpicks end-to-end and closing the shape. Draw another clock face. Connect the following numbers using your straight edge: "12," "2," "4," "6," "8," "10" and then "12" again. Notice that these numbers are multiples of 2 -- and 12 divided by 2 is 6, the number of sides in a hexagon.
Create a model octagon by joining eight toothpicks end-to-end and closing the shape. Draw another clock face, but this time, add dots in between each number place, making 24 points in all. Designate "24" where "12" used to be and "12" where the "6" was before, then number each dot in between. Connect the following numbers using your straight edge: "24," "3," "6," "9," "12," "15," "18," "21," and then "24" again. Notice that these numbers are multiples of 3 and that 24 divided by 3 is 8.