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[Audio] Good Day STEM students. For today's meeting we will discuss 3 lessons. But before we discuss it. I prepare here a jumbled words. All you have to do is arranged the letters to guess the words. Let's start with the first word..

[Audio] What do you this is the jumbled word? Okay, very good! it is Measurement. Next…..

[Audio] What do you this is the jumbled word? Okay, very good! it is Accuracy. Next…..

[Audio] What do you this is the jumbled word? Okay, very good! it is Precision. Next…..

[Audio] What do you this is the jumbled word? Okay, very good! it is Significant. Next…..

[Audio] What do you this is the jumbled word? Okay, very good! it is Figure. Those jumbled words that you arranged are associated with the lesson that we will discuss today. From the First jumbled word, our chapter 2 focuses on measurements. And measurements can be accurate or precise and represented by numerical value which can be a significant figures or not. From this we will discuss our first lesson which is about accuracy and precision. And what do we mean by those words?.

accuracy. PRECISION. Page 29 – 34.

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MEASUREMENT. - is a fundamental component of good science..

Units of the SI System. There are seven base units in the SI system:.

MEASUREMENTS. can be. Scientist Cartoon clipart - Chemistry, Science, Scientist, transparent clip art.

accuracy. PRECISION.

ACCURACY. refers to the closeness of a measured value to a standard or known value..

PRECISION. refers to how close two or more measurements are to each other, regardless of whether those measurements are accurate or not..

ACCEPTED VALUE. Accurate refers to how close a measurement is to the true and accepted value. Precise refers to the closeness of measurements within a set of data..

SIGNIFICANT FIGURES. For the Love of Numbers | Radiolab | WNYC Studios.

Significant Figures. - Are number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value..

Rules:. 1. All nonzero digits are significant.. Scientist Cartoon clipart - Chemistry, Science, Scientist, transparent clip art.

3. Zeros to the left of the first nonzero digits (leading zeros) are NOT significant..

4. Zeros written to the right of a nonzero digit (trailing zeros) may or may not be significant..

5. Zeros written to the right of a decimal point and to the right of a nonzero digit are significant..

Scientific Notation. - Is a method of writing very small and very large numbers..

0.0000000005385 5,125,487,000,000 1. Move the decimal point to the right of the first nonzero digit, between 5 and 3. 1. Move the decimal point to the right of the first nonzero digit, between 5 and 1. 2. Count the number of place when you move the decimal point and write it as exponent of 10 a 2. Count the number of place when you move the decimal point and write it as exponent of 10 b 3. If the decimal point is move from left to right , the exponent is negative, 10 -a 3. If the decimal point is move from right to left , the exponent is positive, 10 +b 4. 0.0000000005385= 5.385x 10 -10 4. 5,125,487,000,000= 5.125487x 10 12 5. In most cases, scientific notation is express in three significant figures, the answer is 5.39x 10 -10 5. In most cases, scientific notation is express in three significant figures, the answer is 5.13x 10 12.

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Practice Determine how many significant figure are there and identify the rules use on the following ..

Practice Express the following numbers in scientific notation..