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Let's continue forward on page 107, beginning with exercise four.

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Order these pictures from oldest to most modern, then answer the questions.

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An old invention will be the most old and simple model of a machine.

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Modern means new and is the most current and exact model of the machine with the best working parts to function.

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So the oldest model or version of a bicycle will have the least amount of parts and will look very old.

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it will look like it is from a different time before us in history. So here we will write

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number one for this bicycle because this is the oldest model of a bicycle.

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Next look at the red bicycle. It has more parts on the frame

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and the wheels look much newer because they are made from rubber material instead of wood material.

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So this will be the next number two because it is the second oldest model of a bicycle,

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and what number does that leave us here? What number is this model of the bicycle?

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excellent this will be number three because this is the newest and most modern version and model

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of the bicycle so now we will fill in what is it it's a bicycle is it a discovery and we know

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that no, a bicycle is not a discovery. It's an invention that humans have

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created to help us get from place to place using the wheel to move. So no, it's

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an invention. Now we will skip exercise five because we do not have the stickers

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and continue on to exercise six. First we have fire. Fire is a chemical reaction of light and

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heat that occurs naturally. We have two pictures of fire here. Here is number one

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and I want you to find number two.

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You will find a man who is using fire to work with metal

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and to make the metal soft

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and to make the metal able to be reshaped.

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Okay, so please find on this side,

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the second picture of fire.

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Next we have a wheel.

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A wheel is a circle shape,

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and it is made of wood, rubber, or metal material.

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A wheel will spin to move objects,

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and it will be placed on an axle

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for a wheel and axle, simple machine.

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I will find the first wheel for you right here,

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made of wood.

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And now I want you to look on this side

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and find the second wheel.

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Finally, we have plow.

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A plow is a farm machine

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used to turn over soil.

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So we use a plow with its sharp end

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to help us turn over soil

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so that we can grow fruits and vegetables

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on the farm.

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Which one is the plow?

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Yes, this is the plow right here.

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Now please find the second image or picture of plow and connect on this side.

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So you should have matched one, two, and three with fire, wheel, or plow.

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Now let's read this last box of information.

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A discovery means finding that something already exists,

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but nobody has found before.

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An invention is creating something new.

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Discoveries and inventions help people

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because they make life easier.

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Fiery is a discovery.

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A wheel and plow are inventions.

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All right, that'll finish us up for today.

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Thank you for reading and listening and completing your work.

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You did a great job, and I will see you next time.

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Okay, good job. Bye-bye.