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Exploring Solids and Liquids – Solids keep their shape – Like ice or a rock, it doesn t change shape if you move it – Liquids take the shape of their container – Like water or milk, it changes shape when you pour it – Solids can become liquids – Heat makes solids like ice melt into water – Liquids and solids are different | This slide introduces first graders to the basic concepts of states of matter, focusing on solids and liquids. Start by explaining that solids are hard and keep their shape, like ice or a rock. Then, describe how liquids flow and take the shape of their container, like water or milk. Discuss how solids can change into liquids by adding heat, such as ice melting into water. Emphasize the differences between solids and liquids in terms of shape and flow. Use simple and relatable examples to help students understand. Encourage them to think of examples of solids and liquids they encounter in their daily lives.

Exploring Solids – Solids are hard and keep shapes – Solids don’t move by themselves – Identify solids in the classroom – Chairs, desks, and books are all solids – Understanding solid properties – Solids have fixed volume and don’t flow | This slide introduces the concept of solids to first graders. Begin by explaining that solids are objects that are hard and do not change their shape easily. Unlike liquids or gases, solids do not move on their own. Ask the students to look around the classroom and name objects they think are solids, such as their desks, chairs, or books. This will help them relate the concept to real-world objects they interact with daily. Emphasize that solids have a definite shape and volume, and unlike liquids, they do not flow. Encourage the students to think of more examples and to touch and feel the solidity of objects around them for a better understanding.

Exploring Liquids – Liquids flow and change shape – Like water in a cup, it takes the cup’s shape – Liquids can be poured – Like pouring milk into a bowl of cereal – Examples of drinkable liquids – Water, juice, and milk are liquids we drink | This slide introduces the concept of liquids to first graders by explaining their properties in a relatable context. Emphasize that liquids are not rigid like solids; they can move around and change shape to fit inside whatever they are in, like water in a cup. Demonstrate pouring a liquid, such as water from a pitcher to a glass, to show that liquids can be easily transferred from one container to another. Engage the students by asking them to name liquids they drink, which will help them connect the concept to their daily lives. This interactive approach aids in solidifying their understanding of the states of matter, particularly liquids.

Changing States: Solid to Liquid – Solids melt into liquids – Like chocolate turning soft when warm – Heat makes solids melt – Warmth from the sun or our hands can melt things – Ice to water transformation – Ice cubes melt into water on a sunny day – Observing melting in daily life – We see melting when ice cream drips on a warm day | This slide introduces the concept of how solids change into liquids through the process of melting. Explain that when solids get warm, they can change their state to become liquids. Use the example of ice melting into water to illustrate this concept in a way that’s relatable to first graders. Discuss how heat is the main factor that causes this change and encourage students to think of and share other examples of solids melting into liquids that they’ve observed in their daily lives, such as ice cream melting or butter becoming soft at room temperature.

Changing States: Liquid to Solid – Liquids can freeze into solids – Like when you make ice cubes in the freezer! – Happens when it gets very cold – Think of a chilly day turning a pond to ice – Water to ice is a common example – Water turns to ice when it’s cold enough | This slide is aimed at helping first graders understand the concept of liquids changing into solids through the process of freezing. Use relatable examples like making ice cubes or observing ice forming on a pond during winter to illustrate this change of state. Explain that when liquids get very cold, they become hard and take the shape of their container, just like water turning into ice in an ice tray. Encourage students to think of other examples of liquids turning into solids and discuss why this might happen, such as juice becoming popsicles in the freezer.

Let’s Experiment: Water’s Amazing Change! – Observe water changing states – Fill tray with water – Use a small tray from our classroom – Place tray in the freezer – The freezer is very cold! – Predict: What will happen? – Will it be liquid or solid after? | This slide introduces a hands-on activity to help first graders understand the concept of water changing from a liquid to a solid state. Before the experiment, discuss with the students what they know about water and ice. Explain that the freezer’s cold temperature will affect the water. Ask them to predict what will happen to the water in the tray after it’s been in the freezer for a while. Will it still be liquid, or will it change? After the experiment, discuss the results with the class to reinforce the concept of water turning into ice. This activity will help solidify their understanding of the states of matter and the conditions that lead to change between these states.

Observation Time: Watching Water Change – Observe the water tray together – Notice any changes in the water – Has the water changed from solid ice to liquid? – Discuss our observations – Share what’s different about the water now – Record our findings – We’ll write down or draw the water’s changes | This slide is for a class activity where students will observe a tray of water that has been left out for a period of time. The goal is to have the students notice the change of state from solid (ice) to liquid (water) and to encourage them to articulate their observations. Facilitate the discussion by asking guiding questions about the appearance, temperature, and state of the water. Encourage them to use descriptive words and to think about how the water’s change of state occurred. After the discussion, assist the students in recording their observations by drawing or writing in their science notebooks. This activity will help reinforce their understanding of the states of matter and the concept of phase changes.

Review: Solids and Liquids – Solids are hard with fixed shapes – Like ice or a rock, doesn’t change shape – Liquids flow and fit containers – Like water or milk, spreads out in a bowl – Temperature changes states – Heat melts solids, cold freezes liquids – Solids to liquids and vice versa | This slide is a review of the basic properties of solids and liquids, aimed at reinforcing first graders’ understanding of the two states of matter. Emphasize that solids have a definite shape and do not change shape on their own, using familiar examples like blocks or ice. Explain that liquids such as water or juice take the shape of whatever container they are in. Discuss how temperature can cause a solid to become a liquid (melting) or a liquid to become a solid (freezing), and use everyday examples like melting ice cream or freezing water into ice cubes. Encourage students to think of examples from their own experiences and be ready to discuss how the change of state occurs in those examples.

Class Activity: Ice Cube Magic – Each student receives an ice cube – Observe ice melting in your hands – Feel the cold ice slowly get smaller and drip water – Solid ice becomes liquid water – This is called melting, a change of state from solid to liquid – Discuss the change you see | This activity is designed to give students a hands-on experience with the concept of a change of state from solid to liquid. Distribute an ice cube to each student and have them hold it in their hands. As the ice warms up from the heat of their hands, it will begin to melt, transitioning from a solid state to a liquid state. This visual and tactile demonstration helps students understand the concept of melting. Encourage them to pay attention to how the ice feels and changes over time. After the activity, lead a discussion about what they observed and how the ice changed. Possible questions include: How did the ice feel at the beginning? What happened to the ice after a while? Where did the water come from? This will help reinforce their understanding of the states of matter and the process of melting.

Fantastic Work, Young Scientists! – Solids to liquids, great discovery! – Liquids to solids, amazing transformation! – Keep exploring science around you! – Look around to see more changes in state. – Questions make us super scientists! – Never stop being curious about nature. | This slide is meant to congratulate the students on their hard work and encourage them to continue exploring the concepts of science, particularly the changes of state between solids and liquids. It’s important to foster a sense of curiosity and the desire to ask questions, as this is the foundation of scientific learning. Remind them of the experiments and observations they made during the lesson to reinforce their understanding. Encourage them to observe changes of state in their daily lives, like water freezing or ice melting, and to come to the next class with their observations and questions ready to share.