# Doing a comparative study of the time taken by different people, to respond to the same stimuli # Comparing people’s pulse rate from different age groups (using a stethoscope) # Making miniature models of simple machines # Testing the effect of temperature on a magnet’s properties
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# Demonstrating how the color of an object determines its size, according to visual perception # Testing the effects of salt on the freezing point of water # Experimenting with how music helps plants grow # Distinguishing a boiled egg from a raw one # Conducting litmus tests to identify acids from bases # Demonstrating the anomalous expansion of water # Showing experiments on the uses of solar energy Let students experiment with an entire pot of white lilies or roses, to give them a beautiful blush once water is absorbed. To change the colors of white flowers, a potted plant can be watered with colored water instead of regular water. This experiment doesn’t have to be restricted to a glass of water. Kids will learn about how plants sustain themselves, using their roots or exposed ends (like the celery stalk) to suck in water. Step 3: The following day, students will be in awe to witness the celery stalk / flower carrying coloration changes, that it absorbs from the colored water. Step 2: Place the celery stalk (snip the bulbous end off) or flower in an upright position in the glass of colored water. Step 1: In a glass of water, add 3 tablespoons of desired food coloring, briefly stirring the solution so that the water is a solid color. Celery stalk (or any light-colored flower on its stem).Parents / teachers can help them put a sundial together for the science fair project, using things like cardboard, paint, stickers, glitter, and other imaginative add-ons. Kids will learn a fun way of telling the time, and can create their own kind of sundial at home using creative materials. They must be whole numbers, so that they can create a sundial that has a complete rotation of 9 – 12 – 3 – 6 – 9. They must also place a row of pebbles along the length of the stick’s shadow, and draw the number (that signifies the time) in the mud / sand using a pencil. Step 4: Tell kids to check on the dial every 3 hours, marking the time in their notebooks along with a diagram of the sundial. Step 3: Track the shadow’s movement by keeping a clock on hand, marking the time in a notebook before placing a pebble where the shadow of the stick falls.
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Showing them what a sundial looks like beforehand, will make them understand the experiment better. Step 2: Explain to them how the shadow will start to shift, depending on the movement of the sun’s rays, much like that of an old-fashioned sundial. Bury the stick in the mud / sand and have kids take notice of the shadow it casts. Step 1: Find a sunny spot to carry out the experiment, whether it’s at the beach, a backyard, or school playground. The microscope experiment can be used to examine not just leaves, but petals as well. Help them identify the plants that they chance upon, using a reference book that enlists all kinds of flowers and non-flowering plants. Kids will learn about the marvels of nature and how plants look ordinary to the naked eye, but are in fact a whole different story when closely examined. Step 4: After this experiment, take students out into an area where there is an abundance of plant life, and using magnifying glasses, have them record their observations by analyzing flowers, leaves, or even insects. It is truly a sight to behold for a 5th grader. Step 3: They will notice how intricate the inside of a leaf is, as the red dye highlights the transparent bits. Step 2: Sandwich the leaf between two microscope slides, and have students record their observations under the microscope. Step 1: Tear a leaf into half (or scrape the top of it), and stain the exposed edge with a single drop of red dye. The result will be a frosted glass with vivid detailing. Leave the tub in a sunlit area for the glass sheet to dry faster, while the excess water evaporates. If this is too messy, a good alternative would be to pour the mixture in a shallow tub before submerging the glass sheet into it. Step 4: Wait for the water to cool down, before using the paint brush to slather the mixture across the glass sheet leave it aside to dry. Step 3: Take the saucepan off the heat and stir into this, the powdered laundry detergent and dextrin. Stir thoroughly for about 30 seconds until some of the salts dissolve, leaving the rest settled at the bottom of the saucepan. Step 2: Wait for the water to start bubbling before adding the Epsom salts. Step 1: Place the glass saucepan over a medium flame on the stove, and pour into this the two cups of water. of dextrin (a.k.a, baked corn starch – optional)
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2½ tablespoons of powdered laundry detergent.