Christmas Boxes:
The volumes of these cubical boxes are given here.
How long are each of the edges?

     

 

1331mm3

2744mm3

27000mm3

74088mm3

 

35.937cm3

4.913cm3

8cm3

12.167cm3

 

 

Starter of The Day Menu | Transum Software | Privacy Policy



Custom Search

Keywords: Starter | Calculator | Cube Root | Xmas

    How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world. Click here to enter your comments.

    If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:
     
    Excellent, I would like to see more like this
    Good, achieved the results I required
    Satisfactory
    Didn't really capture the interest of the students
    Not for me! I wouldn't use this type of activity.

    This starter has scored a mean of 3.2 out of 5 based on 13 votes.
     

    Previous Day | This starter is for 12 December | Next Day

    Visit the Transum Online Shop

    Answers

    11mm 14mm 30mm 42mm
    33mm 17mm 20mm 23mm

    Refresh the numbers used in this activity
    Teacher, do your students have access to computers?
    Do you have "Laptops in Lessons"?

    Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning).

     

    Does your calculator have a cube root key?

    Launch the calculator on your computer.

    There is a way of calculating the "cube root" on a calculator.

    Can anyone in your class work it out?

     

    Interesting fact for the Teacher:

    There is a simple method to compute the cube roots using a non-scientific calculator, which requires only the multiplication and square root buttons. No memory is required. The following method is used:

    • Press the square root button twice.
    • Press the multiplication button.
    • Press the square root button twice.
    • Press the multiplication button.
    • Press the square root button four times.
    • Press the multiplication button.
    • Press the square root button eight times.
    • Press the multiplication button...

    This process is continued until the number does not change when the multiplication button is pressed, since the repeated square root gives 1 (this means that the solution has been determined to as many significant digits as the calculator can handle). Then, press the square root button one last time. At this point an approximation of the cube root of the original number will be shown in the display.

    A full explanation of why this works can be found on Wikipedia, the free online encyclopedia.

    On the Windows calculator, switch to scientific mode, type in your number, the INV   x^3 to get the cube root.