Archive for the ‘decimals’ Category
February 10, 2022
Nathan Chen, 22, USA, wins GOLD in the Men’s Figure skating with 5 brilliant, soaring quadruple jumps executed to perfection to Elton John’s “Goodbye Yellow Brick Road” and “Rocket Man.”
Nathan Chen’s Winning Performance on You tube HERE .
According to the fab NBC video, Mathletes , nine Figure Skating judges score competitors for the complexity of each element (eg. Triple axel or triple spin jump) and the quality of the performance producing a score out of ten.
VIDEO
Tessa Virtue and Scott Moir(Above) GOLD Medal performance at Pyeongchang 2018 here .
Kailani Craine, Australia
This is a typical figure skating score card for one competitor.
The final score, however, is based on the average for only 5 of these scores. Two are eliminated by random selection (Red Brackets). Then the top and bottom scores are removed and the remaining five scores averaged.
Screen grab NBC Mathletes
……………………………………………………
Now consider the IDENTICAL SCORE CARDS
of Skater A & B:
Skater A:
Four scores are removed. Two by the random selector (in brackets) and then the top and bottom scores (with line drawn through them)
7.00 + 7.00 + 7.00 + 6.75 + 7.00
……………………………………..
= 34.75/ 5 = 6.95
Skater B:
Four scores are removed. Two by the random selector (in brackets) and then the top and bottom scores (with line drawn through them). But this time the random selector eliminates two low scores.
The average:
7.00 + 7.25 + 7.00 + 7.00 + 7.00
……………………………………..
= 35.25/ 5 = 7.05
Same score cards but Skater B gets a higher average score than Skater A.
Skater A is, in fact, beaten by a random number selector!!!!
Posted in Averages , decimals , Junior School , Middle School , statistics , Winter Olympics Maths , Year 7 mathspig , Year 9 Mathspig | Tagged 2022 , average , bad , calculate , Figure skating , How do they score , judges , Math , Middle school , Nathan Chen , Problem , Random Numbers , score , scoring , Winter Olympics | Leave a Comment »
January 6, 2022
Answers Q 1 – 5 Here
Answers Q 6 – 10 Here
Answers Q 11 – 16 Here
Answers Q 17 – 22 Here
Posted in % , decimals , Middle School , Rates , Real Life Math , Uncategorized , Year 7 mathspig , Year 9 Mathspig | Tagged % , 2022 , back to school , blood spurt , Call of Duty , decimals , engaging , Foot Loops , Jay-Z , Math , Middle school , rates , real life , tallest teen | Leave a Comment »
January 6, 2022
Posted in % , decimals , Middle School , Real Life Math , Uncategorized , Year 7 mathspig , Year 9 Mathspig | Tagged $ , % , 2022 , back to school , decimals , engaging , greatest , income , Math , Middle school , million , rates , real life , sports , top earners | 1 Comment »
January 6, 2022
Posted in % , decimals , Middle School , Year 7 mathspig , Year 9 Mathspig | Tagged % , 2022 , back to school , blood spurt , Call of Duty , decimals , engaging , Foot Loops , Jay-Z , Math , Middle school , rates , real life , tallest teen | 1 Comment »
September 5, 2021
1. Smoke Jumpers: The Amazing Maths of wildfires
USA UNITS HERE
METRIC UNITS HERE
2. The Rolling Coin Paradox!!
ROLLING COIN PARADOX HERE
3. How barcodes work!
Barcode MATHS HERE
4. Pop Song Beats and Jogging
Pop Song Beats and Jogging MATHS HERE
5. Linear Math and Linear Drumming. It’s a thing!
Linear Math and Linear Drumming. HERE
6. Powers and the Loudest Rock Band in the World
Powers and the Loudest Rock Band MATHS HERE
7. Alcohol Kills! Calculate how much would kill you!
Alcohol Kills! MATHS HERE
8. Tall Tales: Is height the most important factor in sport?
Height in Sport maths: USA UNITS HERE
Height in Sport maths: METRIC UNITS HERE
9. Mmmmm! Chocolate. Yes! It can kill you
Chocolate. Yes! It can kill you MATHS HERE
10. Random Music? You think!
Random Music?MATHS HERE
Posted in % , 10 Attention Grabbers for Middle School , 10 Attention Grabbers for Middle School , algebra , decimals , Middle School , Year 7 mathspig , Year 9 Mathspig | Tagged attention , back to school , calculations , everyday , exciting , Fun , grabbers , Math , Middle school , quick , real , real world , relevant , useful | 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 »
February 22, 2021
Posted in % , algebra , decimals , Fast Food Maths , units weight | Tagged blocks , calculation , cats , chocolate , danger , death , dogs , dose , kills , LD50 , lethal , Math , Middle school , squares , theobromine | Leave a Comment »
February 7, 2021
USA units post here .
Novak Djokovic is the No. 1 Seed in the Australian Open 2021.
His fastest serve = 219 kph
Could you return his serve? Do the maths!!!!!!
The ball leaves Djokovic’s racket and hits the ground 0.31 secs later.
Go here to see why this simplified calculation works!
Mathspig tested her reaction time here . TRY IT!
Mathspig’s best, best, best reaction time = O.33 sec
The fastest serve EVER was delivered by Australian Sam Groth @ 263 kph.
That serve takes 0.25 sec to land on the other side of the court.
Posted in algebra , Arithmetic , decimals , Middle School , The Terrifying Math of Tennis , units speed | Tagged 2021 , Australia , champion , court , ever , fastest , metric , Novak Djokovic , open , reaction , recorded , serve , speed , tennis , Time | 1 Comment »
February 7, 2021
METRIC post here.
Novak Djokovic is the No. 1 Seed in the Australian Open 2021.
His fastest serve = 136 mph
Could you return his serve? Do the math!!!!!!
The ball leaves Djokovic’s racket and hits the ground 0.30 secs later.
Go here to see why this simplified calculation works!
Mathspig tested her reaction time here . TRY IT!
Mathspig’s best, best, best reaction time = O.33 sec
The fastest serve EVER was delivered by Australian Sam Groth @163.4 mph. That serve takes 0.25 sec to land on the other side of the court.
Posted in algebra , Arithmetic , decimals , Middle School , The Terrifying Math of Tennis , units speed | Tagged 2021 , Australia , champion , court , ever , fastest , Novak Djokovic , open , reaction , recorded , serve , speed , tennis , Time , USA units | 1 Comment »
January 30, 2021
USA units version here.
VIDEO
Silverback Gorilla stats here
Human anatomy weight % here .
Speed info here
Impact times for boxers here
Power comparisons here.
Posted in algebra , Arithmetic , decimals , direct proportion , GODZILLA vs KONG , units length , units weight , Year 7 mathspig , Year 9 Mathspig | Tagged 2021 , contest , force , Godzilla , GODZILLA vs KONG , height , impact , King , king hit , Kong , Movies , power , punch , speed , Weight | 1 Comment »