| It's time for the school's annual science fair competition. | | | | them in a square shape in the center of a board. Make |
| Now that your child is older, what are some good 4th | | | | sure the nails are about the same height. |
| grade science fair project ideas? Magnets? Plants? | | | | 3. Take the cardboard box. Using scissors, cut off the |
| Electricity? No need to worry, 4th grade science ideas | | | | top and one of the sides. |
| are not that hard to come up with. Here is a sample | | | | 4. Place the one pined wooden board into the box. |
| project: | | | | Make sure the nail is in the middle. |
| Materials Needed | | | | 5. Blow up one balloon and put it lightly on top of the |
| -scissors | | | | nail. Make sure to be careful. You do not want the |
| -spoon | | | | balloon popping! |
| -tape | | | | 6. Take the lid of the cardboard box that you cut off |
| -crazy glue | | | | with the scissors. Put it on top of the balloon. |
| - nails (same length) | | | | 7. Put the plastic bowl on top of the cardboard lid, right |
| -medium size cardboard box | | | | in the middle. The sole needle should be holding |
| -balloons | | | | everything up. |
| -bowl | | | | 8. Add one spoonful of sugar into the bowl. Watch |
| -bag of sugar | | | | what happens. Keep adding spoonfuls of sugar until |
| -two thin wooden boards (Make sure they have | | | | the balloon pops. Record how many spoonfuls of |
| lengths/widths that are equal to or less than the length | | | | sugar it took for the balloon to pop. |
| and width of the bottom of the cardboard box.) | | | | 9. Now it is time for a different setup. Take out the |
| Step by Step Procedure | | | | wooden board with the one nail. In its place, put in the |
| 1. Adult supervision might be required. Take one of the | | | | wooden board with four nails. Make sure the nails are |
| thin wooden boards and crazy glue/tape a nail right in | | | | in the middle. |
| the middle of the board. Put crazy glue/tape on the | | | | 10. Repeat the other steps. Blow up a balloon and put it |
| head of the nail and stick it on the board so the point | | | | on top of the nails. Put on the cardboard lid. Then put |
| side of the nail faces up. | | | | the bowl in the middle. |
| 2. Take the other thin wooden board. Glue and tape | | | | 11. Add spoonful of sugar until the balloon pops. How |
| the nails in the same manner as the first board (pointy | | | | many spoonfuls did it take this time? |
| side up). Instead of one nail, take four nails and arrange | | | | |