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OP1 measure length, mass, time and temperature, understand that units of measurement follow the SI system
measure length, mass, time and temperature
Measurement is the process of assigning a number to an attribute (or phenomenon) according to a rule or set of rules.
The term can also be used to refer to the result obtained after performing the process.
So what do we measure?
What could we measure about you or your class?
What do we need to Measure ?
measuring and recording
length, mass, time, volume, temperature
perform simple calculations based on these to find the derived quantities:
area, volume, density, speed, velocity, and acceleration
Irregular area Area
Find the area of the palm of your hand ...
volume
density
speed velocity
acceleration
understand that units of measurement that we use in Ireland follow the SI system
Take out a pencil each, measure the length of your desk in pencil units!
That is how many pencil lengths wide is your desk ?
Now compare your results to your neighbours
Did you all get the same answer?
Why? Are the desks not the same size ?
What is wrong with the following sum
£3 + $4 = €7 ??
How could we compare your measurement to your friend, a person in China?
presenting and communicating data
How can we communicate these measurements?
Try this
So it is important if we want to compare measurement we must have a set of Standard Units !!
How to convert from one set of units to another
http://www.dummies.com/how-to/content/how-scientists-measure-matter.html very good!
go here next, why we use units, what are these unit, why we use metric now and not imperial,
if students would prefer to use the old units ... I think they should be let .... see how that works our
Most of the measurement stuff you will need to know is here
http://www.mathsisfun.com/measure/metric-system-introduction.html
how many ml in a drop ??
how many ml in a teaspoon ??
orders of scale ...... the prefixes
Scale of stuff explained! from the VERY BIG to the very small
http://www.cefic.org/metricscale/scale.htm
Some non-standard units of measurement can be found here
http://en.wikipedia.org/wiki/List_of_humorous_units_of_measurement
1mole is = 6.022 × 1023 particles/mol = formula weight expressed in grams
OP2 measure mass and volume of a variety of solids and liquids
Measure the Mass and Volume of a Variety of Solids
The mass of solids is easily measured by using a top pan balance.
Zero the balance first then place the solid on the pan and record the digital reading of its mass.
Make a table of the objects that you measured,
A two step process is needed to find the mass of a liquid.
First measure and record the mass of a clean dry beaker using a top pan balance e.g. 30 g.
Pour the liquid into the beaker and measure the mass of the beaker plus the liquid e.g. 70 g.
By subtraction the mass of the liquid is calculated: 70 g – 30 g = 40 g.
Now find the volume ...
how do we find the volume of
- A cube?
- A sphere?
- A cylinder ?
How could you find the volume of a liquid?
How could you find the volume of a small stone ?
How could you find the volume of a large stone ?
To compare the size of things in space to how they compare to the places you know ...
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