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Cake day: 2023年8月14日

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  • This is part of common core math

    Making Tens (and Hundreds): Composing and decomposing: Students learn to break down numbers to make friendly numbers like 10 or 100, which are easier to add. Example: To add 8 + 5, they might see that 8 needs 2 to make 10. They could take 2 from the 5, leaving 3. Then, they add 8 + 2 = 10, and 10 + 3 = 13.

    They are teaching new students this







  • Insulation on the dishwasher is mostly for noise and stopping moisture or heat from damaging surrounding cabinets.

    The dishwasher is using new water or heating water. It is not designed to keep the same water hot for an hour plus.

    The whole back of the dishwasher is a tiny piece of plastic. Not insulated at all. Some fancy ones now put a little insulation on back.

    But the idea isn’t to keep heat trapped to wash dishes, but to keep heat from being released and damaging things.





  • Funny thing is cars still use right and left (atleast in US) often. Somethings driver vs passenger side. Driver vs passenger doesn’t work everywhere for every car in the world like it does with boats.

    What also might be funny is driver vs passenger could be seen like port and starboard in the future if we get self driving cars. There would be no designated driver side of a car, and every side is a passenger. Just like boats nowadays can port on either side because there are no steering oars needed.









  • Space isn’t really a vacuum

    Wait what?

    Space is a vacuum.

    Could argue it’s not a perfect vacuum. We haven’t created a perfect vacuum on Earth but we have come close.

    If I have a container and remove all the air inside. I have created a vacuum. Not a perfect one, but a simple vacuum.

    If I add rocks to the container. The rocks are now in a vacuum.

    Just like space. Space is a vacuum and there is “rocks” in it.