Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. How is the magnification equation re-arranged to calculate real size and image size?
   • real size = magnification / size of image size of image = magnification / real size
2. What is the relationship between the prefixes centi, milli, micro and nano?
   • Milli is 10^-3 of a metre, centi is 10^-2 of a metre, micro is 10^-6 of a metre and nano is 10^-9 of a metre.
3. How do you represent the size of a cell measuring 0.006cm using standard form?
   • 6 x 10 to the power -3 cm.