Pinning it down, reluctantly
- use any functions to model the wall that the guy is skating along above.
- Try to be specific about what domains you want your functions to occupy
- be as creative as you wish, or as lame
- bon voyage!
I hate to be the bearer of bad news, but most meat in our shops comes from places like this. It’s called a CAFO or a Concentrated Animal Feeding Operation.
Let’s use this eye-opening moment to practise our skills of statistics & estimation. This is a real photo, and research shows that mammals can feel the same emotions as we do.
Maybe you’ll share a few moments with me, thinking about the quality of the lives of animals in our food system, as we do our work.
Are you able to estimate the thickness of the walls of these particular shipping containers, based solely on the information you see in the photo?
I think this is a fun little bit of photo-detection. Perfect to put on your resume for the CIA!
Gross weight – Tare = Net weighthttp://www.canscale.com/
Example: The gross weight of a tin of biscuits includes the tin and the biscuits. The Net weight is the weight of just the biscuits, and the tare in this case would be the weight of the tin. Simple!
I planted 1 lettuce seed in each of these circular ‘cells’ 4 days ago.
Do you think they are growing well? Explain how you know.
Can you work out the fraction that have germinated?
Not all seeds will grow successfully. Sometimes seed packets show a germination percentage rate (%). In other words, this tells you on average how many seeds out of 100 you would expect to germinate.
A gardener sowed 100 of the Calendula ‘Fiesta Gitana’ seeds shown above. She observed that 90 of the seeds germinated successfully. Compare her results with the germination percentage shown on the seed packet.
Can you explain why they are different?
You can convert your germination fraction into a ‘germination
percentage rate’, like we saw on these seed packets like this:
Write your result into your worksheet now.
Challenge! If you want to practise your numeracy skills, try to convert from the fraction to the percentage without using a calculator (or a safety rope!).
HINT: First try to find an equivalent fraction with a denominator that is a factor of 100.