Math 8L1 and 8L2-Today we reviewed Algebra (PR2).-We continued to work on multiplying and dividing fractions, (N6).   We added it to what we learnt last year (adding and subtracting fractions).   PEDMAS.-Notes are posted below.-Homework was to  do question 29 from page 161.-Tomorrow an assignment on PEDMAS involving fractions will be passed out. Science 8L1-Today we had the chance to hold some lenses.    We discussed the difference between concave and convex lenses.  We also discussed how the density of the new medium will affect the path of the light.   It was fun to put the knowledge we learned around density from our last unit to good use.-We also spent some time talking about the image formed by a reflection.  We looked at some examples of how to draw the image.-Notes are posted below.-We will be in the lab Friday. Science 8L2-Today we were introduced to the concepts of reflection and refraction.   Some good examples were given from students today of reflections and refractions in the real world.   Great work! -Notes posted below.