A small experiment of water and oil not mixing in kindergarten
The following are some small experiments that are suitable for kindergarten: ** 1. Simple water-oil separation experiment ** 1. ** Experiment Materials ** - Water, cooking oil, transparent containers (such as glass cups or test tubes), and coloring (option). 2. ** Experiment Steps ** - First, pour the water into the container. If you want to observe it more intuitively, you can add the coloring matter to the water and stir it evenly. Then, he slowly poured the cooking oil into the container. It could be seen that the oil floated on the water surface, and the two formed obvious layering. Regardless of whether it was stirred or not, it would return to the layering state after standing for a period of time. This was because the density of oil was lower than that of water, and oil was fat-dissolved and not water. 3. ** Extension experiment ** - He could change the order of pouring water and oil, pouring oil first and then pouring water, but the result was still that the oil floated on the water and separated. He could also shake it many times to mix it, and then let it stand still to observe. He would find that the water and oil had separated again. ** 2."Blizzard in a Bottle" experiment (involving the principle of water and oil not being compatible)** 1. ** Experiment Materials ** - Clear water, white paint, baking soda, cooking oil, white vinegar, and a transparent container (such as a glass). 2. ** Experiment Steps ** - First, he added white paint and baking soda to the water and stirred it evenly. Then, he poured the cooking oil against the wall of the cup. At this time, the water and oil would be separated. Finally, he slowly poured in the white vinegar. In the experiment, the reaction between baking soda and white vinegar would produce a large number of bubbles. These bubbles would bring the colored water to the oil surface, but after the bubbles burst, the colored water would sink to the bottom again. This reflected the principle that water and oil did not mix. The density of water was greater than that of oil, and the dye was dissolved in water but not in oil, so the liquid was layered. ** 3. Oil-Water Separation Experiment ** 1. ** Experiment Materials ** - Oil painting stick, watercolor paint, brush, and paper. 2. ** Experiment Steps ** - The children first drew their favorite patterns (such as peach blossoms) with oil painting sticks. Because the oil painting sticks contained oil, the traces were not easily dissolved by water. Then, he dipped a brush in watercolor paint and covered the painted picture with it. Because water and oil did not mix, it would produce a special painting effect. The watercolor paint would smudge outside the traces of the oil painting stick, forming a unique picture effect. Read more exciting novels for free
The kindergarten science experiment, UFO experiment target in the water
The goal of the UFO experiment in the water was to cultivate children's ability to discover, analyze, and solve problems. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Video of kindergarten water color change experiment
The following are some principles and examples related to the kindergarten water color change experiment video: ** 1. Purple cabbage water color change experiment ** 1. ** Experiment Principle ** - Purple cabbage contains cyanidins, and its color will change according to the difference in the ph value. When it encountered acidic substances, it turned red, and when it encountered basic substances, it turned blue. - In the experiment, purple cabbage (dried) was placed in the cup, soaked in hot water and separated for later use. The purple-red purple cabbage water was obtained. Drip it into a test tube with a transparent liquid (possibly a solution with a different acid or base), and the color of the solution will change. ** 2. Color Change Experiment ** 1. ** Experiment Principle ** - Using the principle of the three primary colors of red, yellow, and blue. Primary colors are colors that cannot be mixed with any other colors, and other colors other than the three primary colors can be obtained by mixing (adding) or mixing the three primary colors. For example, red, yellow, and blue could be mixed to form orange, green, purple, and so on. In kindergarten experiments, children might mix different colors to observe the change in color, such as mixing yellow and blue to green. ** 3. Color Disappearance Experiment ** 1. ** Experiment Principle ** - Iodine in the tincture was strongly oxidisable, while the vitamins C were reducing, and the two could undergo an oxido-reduction reaction. The reaction between starch and iodinate would produce a substance that changed its ability to absorb light and turned blue. After adding the vitamins C, the reactions between the vitamins C and the iodines caused the starch and the iodines to react to form blue or purple-black unstable compounds, which then proceeded in the reverse direction, turning the solution white. This experiment could be done by pouring a reducing substance (similar to a solution of vitamins C) into a cup that had been dripped with a dye (the color of the reaction between the disinfectant and starch) to observe the change in the color of the water. ** 4. Discolored water experiment (related to povidone and PVP)** 1. ** Experiment Principle ** - He poured water into a cup that had been dripped with the dye, and then dripped in povidone. The liquid changed color. This was because of some kind of chemical reaction. After shaking it evenly, the liquid returned to its original color. This was because the reduction property of the PVP reacted with the oxidisation property of the povidone, causing the previous color change reaction to reverse. These experiments could be made into a kindergarten video of the water color change experiment, showing the scientific principles behind the water color change to children in a simple and interesting way. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Small experiment of light reflection and refraction on water surface
The following is a small experiment on the reflection and refraction of light on the surface of the water: [Experiment Materials: A large container (such as a basin), water, and a laser pointer.] ** Experimental Steps **: 1. He placed the container on a horizontal table and poured an appropriate amount of water into the container. 2. He turned on the laser pointer and shot the laser beam at the water surface at a certain angle. 3. Observing the phenomenon on the surface of the water, one could see that a portion of the light was reflected back. Changing the angle of observation, one could find that the reflected light followed the law of reflection, which meant that the reflected light and the incident light were on both sides of the normal, and the reflection angle was equal to the incident angle. 4. At the same time, some of the light entered the water and changed its direction of transmission. This was the phenomenon of light refraction. It can be found that the refracted light and the incident light are on both sides of the normal, and because the speed of light transmission in air and water is different, the refraction angle is not equal to the incident angle. Through this small experiment, one could directly observe the phenomenon of light reflection and refraction on the water surface. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
In the kindergarten area, games, water, and small classes
The water games in the kindergarten area of the small class could be carried out from the following aspects: - ** Game objective **: - Able to use multiple senses or actions to explore objects and pay attention to the results of actions. - Obey the rules of the game and play boldly according to your wishes. - They were interested in the games they participated in and experienced the fun of the game. - Observe the characteristics and changes of water, such as flow and buoyancy. - Experience the joy of playing in the water. - ** Material delivery **: containers of various sizes (such as bottles, jars, cups, barrels), various tools for transporting water (such as funnels, needles, sponge, cup lids, spoons, wine cranes, straws, water pipes), water, sponge mops, rags, etc., you can also prepare inflatable toys, life balloons, balls, a tamale, etc. - ** Gameplay **: - Choose your favorite containers and tools, try to transport water into different containers, sense the flow of water, and experience the fun of the water transport game. - First, put the shoes on the feet aside, and then enter the pool one by one from the stairs (the water in the pool does not reach the children's calves). Play with the water freely in the pool, step on the water, and feel the characteristics of the water, such as the feeling of the body in the water, whether the water can be grasped, whether the children can see their feet, and so on. - He used containers of different sizes to hold water, pour water, and observe the flow of the water; he played with inflatable toys and life protectors in the water to observe their situation in the water and feel the buoyancy of the water. - They played water games such as pushing the ball and walking in the water (each person had a ball, pushing the ball and kicking the ball), learning to walk like a small animal (the teacher pretended to be an elephant, hit the tamale, and constantly changed his standing position. The children pretended to be small animals and listened to the signal to walk to the elephant that the teacher pretended to be). - ** Game Observation and Guidance Points **: - Guide children to understand the basic rules of the game and safety precautions, such as the order of entering the pool. - The teachers would tour around and observe the children's performance to encourage and guide them, including whether the strength and coordination of the children's body movements had developed, the perception of the characteristics of water and the concept of space, whether they could communicate and play happily with their peers, the understanding of the names and uses of various tools, and whether they could classify and put different objects back in place according to the labels. - After the activity, organize the children to carry out relaxation activities, such as climbing out of the pool in turn, drying their bodies with a towel, changing clothes and shoes, and displaying and sharing their works to improve the children's ability to express themselves. At the same time, summarize the gains of the activity, guide the children to establish environmental awareness, and cultivate good behavior habits. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
A small fish swimming in the water, finger games, kindergarten
" A small fish swimming in the water " was a finger game commonly seen in kindergarten. The content was " A small fish swimming in the water, lonely and worried. The two little fish swam in the water, wagging their tails and nodding. Three little fish swimming in the water, happily becoming friends." This finger game could help children develop their language skills, improve their concentration, and promote interaction and friendship between children. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Science experiment evaporated in kindergarten
The following are some small experiments on evaporating that are suitable for kindergarten: 1. ** Add water and observe the evaporating ** - [Experiment Materials: Alcohol Lamp, Beaker, Water] - ** Experimental steps **: First light the alcohol lamp, fill the beaker with water, and then heat the beaker on the alcohol lamp. After heating it up, he guided the child to observe the changes in the water in the beaker. - [Experimental principle: When water is heated, water vapor will be produced. The phenomenon of water vapor running up is called "evaporating."] This was because when water was heated, the molecular movement intensified, and the liquid water turned into gaseous water vapor, and this process of turning from liquid to gaseous was called evaporating. 2. ** Observing the evaporating in daily life ** - [Experimental steps: Guide the child to think about the phenomenon of evaporating seen in daily life, such as the water on the ground slowly drying after the rain, or the phenomenon of wet clothes drying after drying.] This was because the sun's rays caused water to heat up. 70% of the Earth's surface was covered by water. When water was heated, it changed its form and turned into invisible water vapor. This process was called evaporating. Three-quarters of the water vapor in the atmosphere comes from the ocean, and the rest comes from rivers, lakes, and moist land. 3. ** Bubble Evasion Experiment (extended understanding)** - [Experiment Materials: Water, dishwashing liquid, glue, straw, gloves] - ** Experimental steps **: First, prepare a mixed solution of water and dishwashing liquid in a ratio of 3:1. Dip a straw into the solution and blow out bubbles (this kind of bubble is easy to break). Then, mix the glue and the mixed solution in a ratio of 1:2. Dip the straw into the solution and blow out bubbles. Wear gloves to touch the bubbles. - [Experiment Principle: The bubbles in Step 1 will explode due to the water evaporating.] This involved the thin film formed by water on the surface of the bubble. The bubble was easy to break due to the condensation of water, which also reflected the phenomenon of condensation. After adding glue, it would become very sticky, and the moisture would not evaporate easily. The strength of the bubble membrane would increase, so it could jump on the back of our hands. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
kindergarten floating experiment class
The following was a report about the kindergarten's floating experiment public class: ** I. Teaching Theory ** Water was closely related to children's lives. Children would find interesting phenomena when playing with water. According to the outline, science education should be linked to children's real life, using the things and phenomena around them as scientific exploration objects, and according to the guide, children's exploration of natural things and phenomena could be regarded as "scientific exploration". Considering the age characteristics of the children in the first class who were curious and liked to explore the things around them, the floating experiment public class was designed to let the children grow up in scientific exploration. ** 2. Execution Strategy ** It mainly used observation, demonstration, and operation. Through observation and operation, children may find that leaves float on the water surface, iron pieces sink quickly, wooden blocks and plastic toys do not sink, and so on. This will cause problems and continue to experiment, observe, explore, and gradually develop an interest in exploring science. ** 3. Activity Target ** 1. Let the child perceive the floating phenomenon of objects in the water. 2. It was to explore the floating characteristics of objects and determine which objects were easy to sink in water and which could float on the surface of water. 3. Try to explore the method of making a sinking object float and a floating object sink, and understand the relativity of sinking and sinking. ** 4. Event preparation ** 1. Everyone was given a record sheet, a pen, a basin filled with water, a towel, and a tray. 2. Prepare various items for the floating experiment, such as leaves, bottles, coins, paper boats, stones, wood blocks, keys, building blocks, branches, foam, pins, etc. ** 5. Activity process example ** 1. ** import ** - Show the picture of the little ant crossing the river to stimulate the children's desire to explore. For example, in winter, the little ant had to transport food across the river for the winter. He asked the child if there was any way for the little ant to cross the river easily and safely. Under the limited conditions of the forest, the child would not be able to think without any basis. Then, he asked what the little ant would choose to make a boat. 2. ** Predicting and guessing, first operation ** - First, he asked the child to review the materials that he had thought of to make the boat for the little ant, and then he looked at the materials that the little ant had found on its own. - It was emphasized that choosing the right materials to make a boat was related to the safety of the little ant's life. The children were asked to help judge which materials were suitable and which were not suitable for making a boat and the reasons. - He guided the child to realize that it was just a guess before and needed to be proved by experiments. Then, he would operate like a scientist. He would first observe the material to be verified and draw it on the record paper. He would predict its situation in the water and make a record for the first time. Then, he would start the experiment and make a record. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to prevent the kindergarten from mixing up the clothes
There were mainly the following methods to prevent children's clothes from being mixed up in the kindergarten: 1. Arrange for the child to sleep with his head and feet facing each other. This way, the clothes that the child took off and placed beside his head or feet would be staggered, reducing the probability of wearing the wrong clothes. 2. Parents could print their names on their children's clothes, shoes, bags, masks, and other items to make it easier to distinguish them and avoid taking them by mistake. 3. The teacher could help the child change into the correct clothes according to the name on the clothes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Will water react with oil?
Under normal circumstances, water and oil would not react. Because water was a polar molecular, and oil was a mixture of many liquid fluids (alkyls, cycloalkyls, aromatic and alkynes, etc.), it was a non-polar substance and did not conform to the law of "similarity and compatibility", so it would not react with each other. However, under high temperature conditions, they could be fused with external conditions such as an crystallizer. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
A scientific experiment on colored milk in kindergarten
The scientific experiment of colored milk in kindergarten was often called the "rainbow milk" or "milk fireworks" experiment. Here are the steps: 1. Prepare ingredients: Milk, food coloring, dishwashing liquid, cotton swabs, plates. 2. Operation process: - He poured the milk into a paper plate (the amount of milk should at least cover the bottom of the plate) and let the milk settle for a while. - Drip a drop of food coloring into the center of the milk (such as red, yellow, green, and blue, about 1 drop of each type). - Dip the cotton swab into the dishwashing liquid, put the tip of the cotton swab dipped in dishwashing liquid into the middle of the milk with the dye, and let it stand still for 10 - 15 seconds. You will see a variety of colors spreading outward on the surface of the milk with the cotton swab as the center. You can also continue to drip another drop of dishwashing liquid on the end of the cotton swab, and then put the cotton swab in different positions of the milk. Colorful colors will appear wherever the cotton swab goes. Finally, take out the cotton swab, and the colors in the plate will continue to move. The scientific principle was that the density of milk was slightly higher than that of the paint, so several kinds of water-based paint could float on the surface of the milk for a short time after being added, and the paint was not dissolved in the milk. The dishwashing liquid was a kind of a surface active agent, while the milk contained both fat and oily substances as well as water. After the dishwashing liquid was dripped into the milk, the oil-affinity and water-affinity properties of the paint would constantly take effect. After the dishwashing liquid (surface active agent) was added, the surface tension of the paint would rapidly decrease and form a diffusing effect. The paint in it could only "drift with the flow", constantly changing its movement, moving, diffusing, rotating, and gradually evolving into a colorful and ever-changing pattern. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>