Julia Gillard and the national curriculum

Yes, schools can change their whole curriculum focus, understand, resource and ensure that assessment is in place for a draft curriculum that will change five times before the end of the 2010. We obviously have learnt very little from the OBE implementation fiasco.

Dear, oh dear. I hope no-one buys her "it'll be all right mate" routine.

Here comes another round of teacher bashing when poor direction from government is the issue. I heard Kevin Rudd accept personal responsibility for the performance of his government. I hope he is willing to take the legal liability for rushing something through that affects so many.

Julia Gillard is again doing something in a political timeframe not appropriate to schools. Again, the children of Australia will suffer the consequences.

Where is the testing and ensuring that it is applicable in states where it is to be implemented? The issues will only become apparent under application, it needs a limited application/trial before rollout. Cynically, this won't be done due to the poor polling results of the Labor party and political necessity rather than good practice.

The sheer arrogance of the rush approach is astounding.

Manual Subtraction

An interesting question was posed to me today.

How do I subtract two number manually when the answer is negative??

For instance, 3896 - 4321 (to which the answer is -425).

I originally set up the problem in vertical columns

3896
4321
------

and tried to subtract..

3896
4321
------
?575

which obviously does not work.

So I thought about it.. the only obvious solution was to say, when subtracting always put the larger number on top.

4321
3896
------
*425

As this answer is positive, it is still incorrect. It requires an additional rule, that when the order is changed, the sign of the answer is negative. Thus the answer is -425.

I'm sure everyone knows this (and it's just one of those odd cases I haven't come across before), but it could be an interesting short investigation for upper primary or lower secondary doing directed number exercises.

.. and I have a stupid cold, my nose is dripping like a tap and I can't hug my daughter. It's made my day!

Evidence based education vs OBE

Educational trends tend to go in cycles. From ultra conservative, tried and true methods (such as direct instruction from defined syllabus) to ultra experimental (such as the whole of language approach).

Recovering from the ultra experimental 'OBE' we are now heading towards the ultra conservative 'evidence based' approach.

Although the evidence based approach has merits and is a very attractive alternative after OBE, I would suggest caution. The consequences of evidence based education is already starting to slow educational change through the inability of educational practices to change in time with social change (by the time evidence is gathered, social change has again occurred).

Current practice would be to identify an educational need, and then find a current practice (with evidence) to use to fulfil this need. The obvious issue with this is that where we have a new social situation, no evidence exists and with current research practices - no evidence will ever exist as typically research today does not seek to find a solution, only observe existing practice (existing practice which we know is flawed or wouldn't require research).

Has the pendulum swung too far, now stifling the innovative approaches that could be researched and widely implemented? To avoid this I think a middle ground needs to be found, where innovative practices are encouraged and then researched before extensive implementation. To have one without the other is to invite poor practices or stifling of positive change.

Time continued...

We were working on applying time calculations today, so I posed a question:

"If [student A] was given detention for 1.4 hours and [student B] was given detention 1 hour 25 minutes detention, who would be in detention the longest?"

Students had a guess and then they reviewed the caterpillar for converting between time units.

We then did a number of calculations with some templates to show how a calculation could be constructed.

Eg

3.4 hours = _______ x ________ mins

= ______________ mins

2 122 131 sec = ________ ÷ _________ ÷ _______ ÷ _______ days

= ____ days

1 hour 20 mins = ________ x _________ + ________ mins

= ______________ mins

After we did that, students were just given a range of questions to solve without the templates.

Eg.

2.8 hours = ___________ minutes

12 hrs 12 minutes = ______ hours

12 hrs 12 minutes = ______ days

Then we revisited our original detention problem and a range of similar problems.

Students then practiced with math-joke type connect-the-answer-with-the-question exercise (the old worksheet with a bad, bad mathematics joke at the bottom to solve). Students were able to solve the majority of problems.

yay!

There's nothing to say that with a stronger group I couldn't have taught the same topic by teaching basic time facts (such as 60sec = 1 minute) and then relied on their application of multiplication and division, but in this case I'm glad I didn't do that, the look on the faces of my students when they realised time calculations made sense (that they had found difficult over a long period) was priceless.