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How are the ideas and information of this lesson connected to what you already knew?

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What new ideas or understanding did you get that extended or broadened your thinking in new directions?

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What challenges have come up in your mind for today’s topic？

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this lesson extended my understanding on…

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I found … is particularly difficult.

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Eric Jay Raymond P

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Louis Brian

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Connect with circle and triangle,includes area circumstances.

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we learned how to calculate the arc length and Area.

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三角形面积公式

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Based on I had already know the circle with the pie and some formula like how to find the area of the circle and find the circumference of the circle,I can going deeper towards about the sector,because we haven’t learn much of the sector before.

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扇形求area的公式和三角形的原理很相似。

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connect with the circle and the formular we learn yesterday， which about the length of arc

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we learn about how to calculate the formula。

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学到了如何求扇形面积及为什么

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简化求扇形面积的时候

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我们学了很多公式去算扇形面积

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Sector area,circumstances

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求扇形的面积，求弧

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Can’t remember the equation well

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We don’t know anything about the sector before,what we know in the past was just some simple formula of the circle,but now we had know how to find the area of sector easily and quickly.

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How to calculate Acr

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用绳子求扇形面积

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我们学到了如何运用公式

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Calculate sector shaded area

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哒

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Don’t know how to find the easy way to solve the differences between two “pizza”,struggle for some minute in the class.

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learn how to find the area of a sector，use three different formular

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简化公式的时候