How to  use an astrolabe.

Step 1 Choose a tall object to measure .

Step 2 Look through the straw at the top of the object.

STEP 3 Move forwards or backwards until the string line is hanging at 45 degrees. Get a helper to check.

step 4 Measure how far you are from the object you are measuring and write that down.

step 5  Measure from your eye to the ground. 

step 6  Add it up and you have your answer.      

 
Witch sack Izzy choose 😃

Izabella has a choice of two sacks to trad with the haggled sack 1 has a snorkel, spear gun, IPod,gemstone necklace, guitar, toothpaste.In sack 2there is a deck of cards, 7cans of peach slices, A life jacket, A bow and arrows, a pear of binoculars and a water filter.

In sack 1
A snorkel is worthless because the water is to cold
A spear gun is heavy and u could catch fish with it 
An iPod would run out of battery 
A necklace is only good for fation 
A  guitar is good for entertaining but u would have to Learn it
Toothpaste is good for teeth 

And in Sack 2 
A deck of cards is fun to play with
7 cans of peach slices is good because it is food but if you open the can you have to eat it all or else it will go bad.
A life jacket can save your life if you fall in the water.
A bow and arrows is good for hunting but it might not be the correct pondage there for it would not kill anything.
Binoculars you can see out further then you can already see but the lenses can break.
A water filter can give you clean water that you can drink but you would have to change the filter every so often.  



So I think Isabella should choose sack 2 because it has more helpful things.


From Tim👍
 
 How to make catapult ball car


Materials
- 1  ball
-wood
-1 peg
-slingshot rubber 
-1 axle 
-safety glasses 
-razor blade
-scissors
-power drill 
-screws 
-1 latch 
-string
-coke bottle
-washers 
-hand saw
-old piece of a scaffold 
                                        
          
                                                          Steps 


1. Get all the materials.

2. Saw the wood to size.

3. Drill holes at the bottom of the  wood.

4. Put a bolt throw the holes in the wood.

5. Screw the nut on softly so the middle piece of wood can move.

6.  Put one of  the remaining pieces of sawed off wood on the top,then drill it on the two side pieces.

7. Drill the catapult at the top in the middle of the piece of old scaffold.

8. Put a piece of wood face down either side of the catapult and drill it into the scaffold.

9. Drill  a piece of wood under the piece on top but make sure it is pointing out towards the back of the scaffold  where the middle piece of wood will be this will stop the catapult  so it will fire.

10. Cut of the bottom of a coke bottle then put a washer on the screw, then drill the bottom of the coke bottle on the top of the middle piece of wood which is the neck of the catapult.

11. Hold the piece of the big shot rubber under the coke bottle do not put it directly  under the bottle, move it further down the neck then  screw it on.

12.  Put the other end of the big shot rubber under the two pieces of wood at the top then put then drill it on top.

13. Drill a hole at the back of the scaffold and put the peg in it so it does not flip when firing. 

14.  Drill a latch  at the back but put it on the thin part near the ground.

 15.   Screw a screw with a loop at the end  onto the neck so when you pull it down you can latch it on.

16. Build the ball how ever you want in side.

17.  Tie a thin rope onto the latch.

18. Load it and have fun.