Archive for the ‘Junior School’ Category
September 30, 2021

One of the best summaries of sound can be found here at Maths is Fun

VIDEO

VIDEO

Sound from 0-1000000 Hz in one minute(below)
VIDEO

Other Sound Math:

Make a match Box sing like Sinatra

The Curious Nature of Drummers’ Brains

Headbanger Maths

Pump Up the volume or Knock, Knock Knockin on Your skull wall!

Posted in Junior School , Middle School , Rates , Year 7 mathspig , Year 9 Mathspig | Tagged dB , frequency , harmonics , headphones , hearing , Hz , loud , Maths , Middle school , noise , pitch , simple , sound , test , volume | Leave a Comment »

September 29, 2021
Posted in Junior School , Middle School , Year 7 mathspig , Year 9 Mathspig | Tagged calculations , cancelling , dB , frequency , harmonics , headphones , hearing , loud , Maths , Middle school , noise , pitch , simple , sound , volume | Leave a Comment »

September 29, 2021
Posted in Junior School , Middle School , Year 7 mathspig , Year 9 Mathspig | Tagged calculations , cancelling , dB , frequency , harmonics , headphones , hearing , loud , Maths , Middle school , noise , pitch , simple , sound , volume | Leave a Comment »

July 30, 2021
Posted in decimals , Junior School , Lego Maths , Lego Olympics , Middle School , Olympic Maths , Ratio , Uncategorized , units length , units speed | Tagged 2020 , Carl Lewis , Lego , Lego Olympics Marathon , marathon , Math , Middle school , Olympics , ratio , scale , Tokyo | Leave a Comment »

May 17, 2021

Aviation Aerospace Australia has produced an amazing Video Here to show girls what careers are available in the aviation and aerospace industries. Mathspig has met 3 female Boeing Engineers and a female engineer that worked on the Williams Formula 1 car.

An information brochure (link below) that goes with the video gives subject advice and income ranges over a lifetime career:

information_brochure

Meanwhile, this is why girls (and boys) should do STEM.

Posted in Junior School , Math Careers , Middle School , Year 12 mathspig , Year 7 mathspig , Year 9 Mathspig | Tagged advice , aerospace , Australia , aviation , career , girls , income , industry , information , Math , Middle school , path , STEM , subjects , Year 12 | Leave a Comment »

April 12, 2021
Posted in Decimals , Junior School , MEDIA MATHS , Middle School , units speed | Tagged amazing , baseball , calculations , comparison , facts , fastball , Fun , home run , Maths , metric , Middle school , Ohtani , pitcher , speed , USA units | Leave a Comment »

March 24, 2021
So often MATH makes clear what politicians fail to see. This is a cartoon in the Boston Globe by Dan Wasserman.

Follow Dan on Twitter @WassermanToons

The minimum wage in Australia is currently $19.84 per hour for 21yo+. This is USA $15.08.

Posted in Arithmetic , Junior School , Middle School , Real Life Math , Social Justice , Year 7 mathspig , Year 9 Mathspig | Tagged argument , average , basic , Boston Globe , cartoon , CEO , compare , Dan Wasserman , income , Justice , politicial , Social , USA , wage , worker | Leave a Comment »

February 13, 2021
Metric version here .

The Australian Open is on at the moment in Melbourne in LOCKDOWN. (We have 1 community-acquired case. Tennis players are in a bubble.)

Is height a BIG advantage in tennis?
Here are the heights of 3 top seeds in the Australian Open. (See graph below)

No. 1 Novak Djokovic 6ft 1″ (73 in)

No. 6 Alexander Zverev 6ft 6’ (78 in)

No. 8 Diego Schwartzman 5ft 7’ (67 in)

1. Does serve speed increase with height?
That would be an advantage. Here is a Height vs Serve Speed chart for the Top 6 seeds in the tournament:

Find serve speed data here .

There is NO CLEAR HEIGHT ADVANTAGE for serve speed.

2. Does the serve return rate increase with height?

Here is Diego Schwartzman (L) when he defeated Alexander Zverev (R ) in the 2019 US Open.

What is Schwartzman’s Super Power?
Schwartzman, the shortest player on the circuit (see graph above), tops the service returns stats. Highest 2nd serve return rate. Third highest 1st serve return rate. See data below. So agility, speed, and reaction times are also important factors in becoming a tennis star.

Go Schwartzee! Check data here.

Posted in % , Decimals , Junior School , Middle School , Sport Maths , The Terrifying Math of Tennis , units length , units speed | Tagged Australian open , data , fastest , height , Math % , Middle school , player , rank , real world , serve , shortest , speed , stats , tallest , tennis | 2 Comments »

February 13, 2021
USA units post here.

The Australian Open is on at the moment in Melbourne in LOCKDOWN. (We have 1 community-acquired case. Tennis players are in a bubble.)

Is height a BIG advantage in tennis?
Here are the heights of 3 top seeds in the Australian Open. (See graph below)

No. 1 Novak Djokovic 188cm

No. 6 Alexander Zverev 198cm

No. 8 Diego Schwartzman 170cm

1. Does serve speed increase with height?
That would be an advantage. Here is a Height vs Serve Speed chart for the Top 6 seeds in the tournament:

Find serve speed data here .

There is NO CLEAR HEIGHT ADVANTAGE for serve speed.

2. Does the serve return rate increase with height?

Here is Diego Schwartzman (L) when he defeated Alexander Zverev (R ) in the 2019 US Open.

What is Schwartzman’s Super Power?
Schwartzman, the shortest player on the circuit (see graph above), tops the service returns stats. Highest 2nd serve return rate. Third highest 1st serve return rate. See data below. So agility, speed, and reaction times are also important factors in becoming a tennis star.

Go Schwartzee! Check data here.

Posted in % , Decimals , Junior School , Middle School , Sport Maths , The Terrifying Math of Tennis , units length , units speed | Tagged Australian open , data , fastest , height , Math , Middle school , player , rank , real world , serve , shortest , speed , stats , tallest , tennis | 2 Comments »

March 26, 2020
There is some amazing Middle School Maths in The Cake Server on Joseph’s Machines.

eg. Calculate the length of the arc of a circle to fit your HEAD! Watch for it.

Besides, this is so much FUN!

VIDEO

Posted in arc , Circle C , Junior School , maths joke , Middle School , Year 7 mathspig , Year 9 Mathspig | Tagged calculate , crazy , Fun , funny , joseph's , machines , Math , Middle school , pendulum , video | Leave a Comment »