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Hi everyone, my name is Marta Galán and in this video I'm going to walk you

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through my final project for the course Inquiry-Based Learning for Science

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Teacher. On the image you can see the blog that we created as a group to show

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all the methodologies and everything that we have learned. If you want to

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check it out, just go to inquirybasedsciencelearning.wordpress.com. You are more than welcome to serve with

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us some new projects and some new experiences for teaching science at high school level.

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For my final project, I decided to use a lab simulation that you can find on this webpage,

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interactive simulations. They are really good simulations from different physics

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and chemistry topics and some other scientific ones. Sometimes it's hard to

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find time or to have the equipment to get our students to the lab. Using a lab

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simulation you can have the advantages of going to a lab even if you don't have

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the equipment or the time that you would like to. The activity that I chose is a

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Gravity Force Lab. In this Gravity Force Lab you will have two masses M1 and M2

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that you can vary making them bigger up to 1000 kilograms or smaller. You can

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also change the distance just pulling them apart or making them closer. At the

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top of every mass we can see a small arrow that represents the force, the

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vector of the force, the direction, the sense, and also we can see the value of

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the force in international system units, newtons. For our students to do this

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lab we will need to let them explore a little by themselves, first they learn

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how it works, and after that we can allow them to work alone, just setting different

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values for the two masses. I have worked with mass 2 500 kilograms and distance

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5 meters and varying the value of mass 1. You can just note down the different

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values of the force to use them for our representation using some representing

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health such as an Excel page. You can see the final data I've got just changing the

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mass one, having the mass to add a set value as well as the distance. Our

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students can do this and they can also make a graph with this that if they

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select them just doing insert is easy to find a graph that represents all this

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data we can work a little with it we can for example choose a different design

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where we can have an adjust, a linear adjust, so they can use these values to determine the law, the universal law of gravity.

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We can also change the data, we can change the units, these are things that they can do alone and that will help them later to process the information.

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We can see in the graph that there is a direct relationship between the force and the mass of the object.

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We can do the same experience just setting two values for mass 1 and mass 2.

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In this case, I'm setting them to 50 kg, both of them.

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You can also use these little arrows to make it more precise.

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And changing only the distance, so we can note down different values for different distances, make sure you have enough of them, so all the range, 1 meter, 7 meters, 10 meters, so we can at the end have a nice graph with all these values.

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As we have done before, we can have our students making a graph with these values in an Excel page.

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In this case, our students will find that the relationship is more difficult to plot.

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I mean, there is no linear regression that will fit this data.

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It depends actually on how much they know.

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so we can help them find, adjust the data, like changing them, doing some kind of division,

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or we can just help them, giving them the relationship between the two variables when they are not constant.

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So we can change the axis, make the graph look a little better, we can have the numbers or not,

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so they will find a graph more or less like this.

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The good thing about these simulations is that you don't actually need to give the data to your students. They can decide. I want to have this mask, I want to have a different one. They can explore, they can decide the distance.

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So anyone can have different data so they can decide and have different data for their representation. I hope you like the simulations. There are also some worksheets that you can work with your students, some explanations written down on a PDF document that you can use if you want to help you prepare this lesson.

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That will give you some more information on how to use this activity with the students in your class.

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One of the good things about these activities, you can just use that with second-year students,

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just to make them realize that mass is a variable as well as distance.

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You are talking about gravity force, but you can also use that with higher-level students.

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If you want to make them find out their relationship, the mathematical relationship, and you can develop the mathematical model. So, thank you for listening. I hope you will find this activity useful. Bye bye.