Posts Tagged ‘Middle school’

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7a. Dad Jokes: The positive, the negative and the number line

September 13, 2017

The Complaint: Maths is really SCARY!…………….

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The Cause:

Some students think maths is always right or wrong and they are scared of making mistakes.

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The Solution:

Conduct your own DAD JOKE survey. No right or wrong. Answers will vary from group to group.………………………………………………………………………………….

Topics:

Postive, negative integers, number line.

 

The Challenge

More Math Jokes for Mathy Folks here.

PLAIN TEXT Dad Joke Maths Survey Worksheet pdf UK & Australia

PLAIN TEXT Dad Joke Math Survey Worksheet pdf USA

Dad Joke List 1 pdf

Dad Joke List 2 pdf

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7b. Middle School Maths Photo Scavenger Hunt

September 3, 2017

The Complaint: Maths is really SCARY!…………….

………………………………………………………………………………….

The Cause:

Some students think maths is always right or wrong and they are scared of making mistakes.

………………………………………………………………………………….

The Solution:

Go on a Maths Photo Scavenger Hunt. There is no right or wrong. Just see what maths you can find out there.

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The Challenge:………………………………………………………

Can you find the following maths out there somewhere and bring back photographic evidence?

Topics:

Multiple Topics

 

The Challenge

Maths Photo Scavenger Hunt Worksheet PDF

More interesting Maths Selfies here.

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7c. Crack a Security Code for Middle School………… Yes! Really!

August 27, 2017


NB: This post has been updated twice. Disraeli said that if you want to become acquainted with a subject, write about it!!!! Mathspig’s head nearly exploded writing about this subject. But I’ve got it down to its simplest form now. One that Mathspig  finally understands.

The Complaint: Maths is really SCARY!…………….

………………………………………………………………………….

The Cause:

Some students think maths is always right or wrong and they are scared of making mistakes.

………………………………………………………………………….

The Solution:

Tackle problems that can’t be solved even by a computer. Students can only guess the answer and then test it. Anyone can make a guess. Work in groups. Every member of the group can contribute as students explore this maths.

………………………………………………………………………….

The Challenge:……………………………………………………….

Can you crack a security encryption code?….………………………………………………..

……………………..…………………….……………………………………………………………

Topics:

Prime Numbers, Really BIG numbers……………………..

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Prime Numbers Hide Your Secrets: SLATE

Remember the best online calculator is the WEB 2.0 Calc. NOTE: This is a secure website and you can check on its KEYCHAIN too.

You will find a fantastic list of Prime Numbers here.

Crack a Security Code WORKSHEET & ANS

Mathspig thanks Prof Kate Smith-Miles, Prof of Applied Maths, Monash University for the information about Keychains. Kate has used KEYCHAIN exercises with primary school students. They really enjoyed going home and showing their parents how to find a Keychain on the computer.

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8. When will I EVER use this maths?

August 19, 2017

The Complaint: I’ll Never Use This Maths!………………

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The Cause:

Text book exercises that are good for skill building, but appear irrelevant to the real world.

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The Solution:

You are going to use this maths NOW

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8a. Calculate Your Daily Iron Intake

8b. How much blood can YOU lose and survive?  

METRIC………………………………………………………………..

USA Units………………………………………………………..

8c. What Volume of Alcohol is Lethal?

 

 

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8a. Calculate Your Daily Iron Intake

August 19, 2017

The Complaint

8a: When will I EVER use this maths?

The Cause:

Students doing repetitive text book exercises without using maths to solve REAL WORLD problems.

The Solution:

You are going to use this maths NOW.

Calculate Your Daily Iron Intake

TOPICS: Decimals, %, weight units (METRIC) 

Some information you need. 

Iron (Chemical symbol:Fe) content in food is recorded in mg because there are only small amounts of iron in food.

1 g = 1000 mg

eg. 1 paper clip = 0.5 g = 500 mg

     Iron in 2 teaspoon peanut butter = 0.19 mg

Full Page Worksheet PDF:Daily Iron Intake Calculation Work Sheet

WORKED EXAMPLE: Breakfast

More info here

 

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9. I Hate Answering Questions in Class: BUSTED

August 10, 2017

The Complaint:

 

9. I Hate Answering Questions in Front of the Class

 

The Cause:

Students worry about getting the answer wrong in front of the class because they believe that maths answers are always either RIGHT or WRONG.

The Solution:

The maths we need in the REAL world often involves open ended questions. Think of finding directions on Google Maps. What is the best way to get from A to B? One route might be shorter but include tollways another might involve longer distances but less traffic. 

Text book problems are often repetitive with RIGHT answers at the back of the book. But in the real world maths problems nearly always involve THINKING. eg. A building design might require specific engineering maths. Now add costing! That’s an open question. There are many options. Maybe the costing will then change the engineering. Build 20 stories instead of 25.

Thinking Outside the box in Education: Info and Toolbox: here

Prof Peter Liljedahl, Faculty of Edu, Simon Fraser Uni, Canada, advocates  open ended questions in the maths classroom.

Here are some of his examples for Year 7 -9 (Download pdf file at the link):

Concert in Toronto;

You have won tickets to a concert in Toronto but must plan your trip using flight times to arrive at the concert by 9pm.

Two Bike Race:

You are in a bike race and have to use a street bike and trail bike, but one bike must be left somewhere on the route.  You travel at different speeds depending on which bike you use. What route do you take? (A basic map is included.)

Something inspiring:

Maths is often about playing around with answers. This is how play led a class of 12 year olds to produce a peer reviewed research paper published in a science journal.

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The Terrifying Math of Running from a Bear … USA Units

July 17, 2017

USA UNITS below. METRIC UNITS here.

BEAR STATISTICS

Grizzly Bear

Weight:  550 lb        

Height:  8’ 2”   

Top Speed: 35 mph  =   51 ft/s    

Brown Bear

Weight:  1,500 lb       

Height:  8’ 2”              

Top Speed: 22 mph  =  32 ft/s     

Comparing these speeds to the fastest man on earth, Usain Bolt:

Usain Bolt:

Top speed: 27 mph  =   40 ft/s     

Bears are not dangerous:

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In fact, more Americans die each year from choking on their own vomit than are killed by bears.

More death stats here

Nevertheless, bears are very fast. So you can see why Park Rangers offer the following advice:

More information at Mountain Nature.

The reason for waiting until the bear is 15 ft away is to make sure the spray doesn’t disperse in the air. If the Pepper Spray is too spread out it will not stop the bear.

Ref: Dog helps save hikers after grizzly chases them for 20 minutes.