Though it may not be obvious at first, I think this new Numberphile video would be a perfect thing to show as an application of zeros of functions. Watch this video about how to use math to steady a wobbly table and see if you don't agree.
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C, MHF4U, MCV4U, MCT4C
Curriculum Tags: MFM2P
Some nice unit conversion resources (specifically metric - imperial) here from Mr. Stadel. Includes a 3Act task dealing with speed conversions. Good for ratios too. Check it out below.
Curriculum Tags: Gr7, MFM1P, MFM2P
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
Talking about outliers? Then here is an example relating to playing scrabble. In fact, relating to the best scrabble player in the world. Spoiler alert he's the outlier.
Curriculum Tags: Gr8, MDM4U, MAP4C
Even the NY Subway collects data. This time on what kinds of things have been left behind on the trains. Not surprisingly, cell phones are #1. But click on the link below and see the graph of the weird stuff too. None the less, some more graphs to include in any data management unit
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U