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Asked by SimplyJassy at 11:54 AM on Mar. 13, 2011 in School-Age Kids (5-8)

Level 6 (126 Credits)
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Answers (10)

  • Determine what chemicals are most effective in producing plant growth by subjecting plants to watering with an assortment of liquid combinations. Buy a collection of tomato plants and a watering can. Then decide upon an assortment of chemicals to test. You can try plain water, water mixed with dish soap and water mixed with plant food, or mix it up and test a different set of options. Label your plants, indicating which mixture you will water each plan with. Water the plants daily using the appropriate mixtures. Before you begin, decide which chemical mixture you think will be most effective in producing healthy plants. List your choice in your hypothesis. Over the course of a month, record observations about the plants, including plant height, greenness and overall apparent health. At the end of a month, determine which plant is the healthiest and, by connection, which mixture was the most effective food for the plant.

    Answer by Peajewel at 1:45 PM on Mar. 13, 2011

  • How seeds know, the bean up against the side of a clear jar so you can see its progression. Have a few growing at different stages.

    You could also choose different types of soil and show what grows best in each type.

    Answer by Nonoluna at 12:20 PM on Mar. 13, 2011

  • Oh one easy one is you can buy 2 plants of the same type. Take a cardboard box and put over one plant thus keeping it in the dark all of the time not letting it get any sunlight. The other, you keep in the sun. See which one grows the best.

    Answer by AlliPerry at 12:22 PM on Mar. 13, 2011

  • Maybe a mini herb garden...You can turn a large empty soda bottle ( 3 liter?:) into a terrarium by cutting off the top and turning it upside down. Seems to me you can reinsert it into the plastic rim that came with it. The dirt would go into the part that covered the bottom round part.
    The same herb idea can be used with tin cans.
    For the scientific part of this you could put one plant under a plastic bag, another under the soda bottle and a third with no top..(Same plant of course) ....See which one grows the tallest or fastest....

    Answer by VeronicaTex at 12:52 PM on Mar. 13, 2011

  • and, by connection, which mixture was the most effective food for the plant. Create a poster or display board that features your plant observations and your overall decision. If you completed the experiment in close proximity to the science fair date, take your plants to the fair and put them on display


    Answer by Peajewel at 1:46 PM on Mar. 13, 2011


    That is where I got the iformation from and there is another one on there about light effectiveness on plants. It said it was for first graders so maybe it will work.

    Answer by Peajewel at 1:48 PM on Mar. 13, 2011

  • You got some good ideas

    Answer by tazdvl at 6:50 PM on Mar. 13, 2011

  • Use different things to water the plants and decide which one makes plants grow better.

    Answer by Pnukey at 8:00 PM on Mar. 14, 2011

  • Google is your friend. First Grade Science Projects. Google it.

    Answer by cleanaturalady at 9:49 PM on Mar. 14, 2011

  • I think that starting seedlings is a good idea.

    Answer by KTMOM at 11:26 AM on Mar. 16, 2011

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