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Chapter 2

Chapter 2. Measurement. A. Time. Make sure you copy in your notebook all the units of time and you know how to convert… >> TO DO INDIVIDUALLY: Exercise 2A1's odd numbers (1,3,5,7). Please check the examples if necessary. Extra: even numbers. Read the time zones info and visit

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Chapter 2

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  1. Chapter 2 Measurement

  2. A. Time Make sure you copy in your notebook all the units of time and you know how to convert… >> TO DO INDIVIDUALLY: Exercise 2A1's odd numbers (1,3,5,7). Please check the examples if necessary. Extra: even numbers. Read the time zones info and visit http://www.timeanddate.com/worldclock >> TO DO INDIVIDUALLY: Exercise 2A2's odd numbers (1,3,5,7). Please check the examples if necessary. Extra: even numbers.

  3. B. Temperature • Celsius and Fahrenheit • Using formulae or conversion graph. >> To do: Example 5, Exercise 2B: 1,3,5,7 Extra: even numbers Extra points: Presentation C (next lesson)

  4. C. Scientific Notation (Standard Form). Advantages of Scientific Notation when using very big or very small numbers. Using a Scientific Calculator Using a graphics calculator • Example 6 (do & check) • Exercise 2C (odd numbers only) • Extra: Exercise 2C (even numbers) • Extra points: Presentation D (next lesson)

  5. D. International System (SI) Units GROUP WORK: Visit BIPM INDIVIDUAL WORK: Individual work: Find and copy the table with the 7 base units and their more common derived units • Examples 7 and 8 (do & check) • Exercise 2D (odd numbers only) • Extra: Exercises 2D (even numbers) • Extra points: Presentation E (next lesson)

  6. E. Rounding Numbers. GROUP WORK: Discuss: Is it sensible to approximate a number in Math? INDIVIDUAL WORK: Individual work: Copy the rules for rounding off. Give one example for each. • Examples 9,10,11,12,13,14 (do & check) • Exercises 2E1 , 2E2 and 2E3 (odd numbers only) • Extra: 2E1 , 2E2 and 2E3 (even numbers)

  7. F. Rates. GROUP WORK: Brainstorm examples of rates used in everyday life. INDIVIDUAL WORK: • Examples 15, 16 and 17 (do & check) • Exercises 2F1 and 2F2 (odd numbers only) • Extra 2F1 and 2F2 (even numbers) Work in pairs (extra points)!! Investigation1 “Stopping Distances” (NB. You do not need all materials listed) Please publish your results in your notebook or online.

  8. G . Accuracy of Measurements GROUP WORK: Brainstorm examples of instruments used to measure and relate them to section D. INDIVIDUAL WORK: • Examples 18, 19 and 20 (do & check) • Exercise 2G (odd numbers only) • Extra 2G (even numbers)

  9. H . Error and percentage error NB. Many exam questions on this section! GROUP WORK: Discuss: approximation vs. estimation. Give examples. INDIVIDUAL WORK: Copy formulae in page 89 (Error, percentage error and absolute percentage error) • Example 21 (do & check) • Exercise 2H (odd numbers only) • Extra 2H (even numbers) Work in pairs (extra points)!! Investigation4 “Estimating and Accuracy) (NB. You do not need all materials listed. Do only some sections). Please publish your results in your notebook or online.

  10. Review • INDIVIDUAL WORK • Review Unit • Mock test – Set 2A. (Do, check answers & obtain your score) • NEXT End of Unit 2test…. Good luck 

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