Purerehua - Wood Tech

The past 2 weeks we have been looking at the maori instrument (Purerehua), We have been looking at the width and the length 

Rope:1.8m

Rimu:19.5cm

Weight of rimu: 3kg

Step on how to make a purerehua

1. Measure length and height of the plank on wood
2. Cut corners of your piece of wood, with bandsaw
3. Sand your wood to make all corners smoother
4. Use the sander to hallow the rimu
5. Drill the hole on top of your rimu to put your string in

Today we finished our purerehua (Rango), (Bowfly)

Algebra in science

In hurumanu 6 we have been learning about math for example, Algebra, Geometry and Angles, its not called learning about math its called Mathmatical thinking, one thing I liked about math is I got to split up into groups with our friends, some people didnt like working with there friends because they didnt get that much done, but I didnt go with my mates, so I´d be more focused one thing I didnt like was, how we had to write on paper out of a huge text book

Lemon Power

Voltage: The voltage between two points is a short name for the electrical force that would drive an electric current between those points. Specifically, voltage is equal to energy per unit charge.

Current: Current is the flow of electrical charge carriers like electrons. Current flows from negative to positive points. The SI unit for measuring electric current is the ampere. One ampere of current is defined as one coulomb of electrical charge moving past a unique point in a second.

Aim: To create voltage out of a lemon.

Method: 

• Roll the lemon out so the inside is liquidy. 
• Stick a piece of zinc and copper into the lemon
• Connect the lemon up to a voltmeter