Addition/Subtraction

Adittion and subtraction can be solved by using two stratefieas: counting on/back, rounding and compensating.

Counting on is adding forward using figure when the number is under ten. Counting back is subtracting usig fingers, when the number subtracded is under ten.

Rounding and compensating is rounding the added or subtracted number to the nearest tidy numbe, then compensating for the rounding. Compenstating is done by spitting the new number into the old number and the leftover.

Counting on/back and rounding and compenstating are easy strageis to use for addition and subtraction, when numbers et too big to be solved with basic facts.

Party popper plaining

The creative masters looked at every part of the party popper and saw what parts needed to be changed. We experienced the party popper to see what parts work.

In the beginning, we changed the cup, the filling and the outside look. We changed the parts except for the stopper, the weight, the hole on the bottom of the cup and the elastic band.

Afterwards We thought about what our design would be for the cup.

To finish up we changed some parts because they didn't work well.

I enjoyed doing this activity because we got to make a party popper our own way.

Trebuchet

A trebuchet is a mediaeval military weapon that knocks down castle.

Here is an explanation of how they work.