Posts Tagged ‘death’

Death by Chocolate for DOGS
February 8, 2026
Chocolate can be fatal to dogs. As dogs are small they can easily eat enough chocolate to kill them. According to The Royal Society of Chemistry
The National Geographic has an amazing interactive chart for dog poisoning by chocolate.

Death by Chocolate for CATS
February 8, 2026Chocolate contains a poison called Theobromine.
LD50 for Theobromine for cats is 200mg.
LD = Lethal Dose. LD50= Lethal Dose for 50% of the population. Cats in this case. This is how poison toxicity is measured.
According to The Royal Society of Chemistry, cats are hypersensitive to Theobromine but, as cats cannot taste sweetness, they are rarely poisoned.

Dangerous Math: Death by Snake, Spider, Quad bike, Kangaroo, Raccoon and Vomit
November 17, 2022It’s almost summer in Australia. In Melbourne we’ve had floods, mosquito – mozzie- numbers surge and, last Wednesday, I nearly stood on a Tiger Snake that was escaping the floods near the Yarra River!
This post, however, is really a PR exercise for sharks. We fear them. We’re horrified by the thought of being eaten alive!!!. We only have to hear the soundtrack from JAWS to feel the fear. Then we see news footage like the attack below and think it happens all the time. Look at that fin. It’s enormous! But sharks are not THAT dangerous. We really need to look at the statistics to understand the level of threat. See below.
Why do we fear sharks? Look at the numbers. REALLY. Show your students. What about stairs??? Quad bikes? Chairs? Bees? That’s when you should feel the fear!!! We are irrational beings. This is why we need maths. We can make rational decisions using maths. There is also a safety message here. The maths speaks for itself. We won’t hammer it.
THE MATHS:
There is lots of maths you can do with these tables.
- Bar Graphs
- Pie Charts
- Ratios (What’s the ratio of death by Snake to Quad Bike?)
- Fractions (Show death by jet ski to falling down stairs as a fraction)
- Percentages
- Powers to the base 10. How many deaths occur in each country per 100,000 or 1 x 105 head of population for, say, Quad bikes or ATVs? We can use these numbers to compare death rates and find out how dangerous riding a Quad bike is in each country.
……..Population Data 2022:
……..Aust…26 million = 26 x 106
……..USA…332 million = 332 x 106
……..Canada…38 million = 38 x 106
……..UK…67 million = 67 x 106
But we’re doing this for the SHARKS!!! 
- Cyclists. 2. emergency lanes 3. fell off a chair 4.QUAD BIKES. 5. Horse, donkey. 6. buses 7. Cow, bull. 8. ice skates, skis or skateboards. 9. Venemous snake 10. kangaroo 11. bee 12. emu 13. Jet ski 14. Shark 15. Crocodile
1. Quad Bike or ATV: In 2007, 107 children younger than 16 were killed on ATVs. 2. Cyclists 3. choke on vomit 4. Cats, cows, horses, pigs, raccoons. 5. Bees, wasps 6.PWC or Jet Ski 7. Lightning 8. Xmas tree fires 9. Snowboard 10. Venomous Spider 11. Scorpions 12. Venomous Snakes , lizards. 13.Crocs & gators 14. Shark 
- ATV Quad Bike 2. Canoe 3. Kayak 4. PWC or Jet Ski 5. Unpowered inflatable 6. Avalanches or landslides. 7. Lightning 8. Toboggan 9. Moose –Car collision 10. Bears (All Nth America) 11. Rattle Snake 12. Wolves 13. Shark
- falling down stairs. 2. Cyclists. 3. Choke on vomit 4. Falling off Chairs 5. QUAD BIKE or ATV 6. Buses 7. Struck by cow, horse, other mammal 8. hornets, wasps, bees. 9. PWC or jet ski .10. Parachutists. 11. Skateboards, ice skates, skis 12. Canoe. 13. Shark

Braindead Math for Halloween
October 13, 2021Tarantino, being a connoisseur of Fake Blood, used several types of Fake Blood in the film Kill Bill II ranging from good splatter to free-flowing blood. According to one fanzine, in this film, Uma Thurman killed 88 opponents with a sword. So the numbers(above)are in the right ‘blood-soaked’ ballpark.

More survival math (The Hunger Games) here.

Death by Chocolate: Yes! Chocolate can kill. But how much would kill you?
February 24, 2021Choco Yum Yum! Mathspig lervs chocolate. But did you know chocolate can kill you?
Chocolate contains a chemical called Theobromine. This alkaloid ( other alkaloids include cocaine, nicotine, caffeine, and strychnine) can kill humans. More info Wired Magazine.
How much chocolate is too much?
Firstly, the darker the chocolate the more Theobromine it contains.
According to About Chemistry based on the highest possible toxicity:
* Vetmedicine: Cooking chocolate contains 8-10 times the Theobromine in Milk Chocolate.
According to Wired large doses of theobromine may cause “nausea and anorexia ….. sweating, trembling and severe headache.”
The Royal Society of Chemistry notes that chocolate does not contain caffeine, but theobromine induces similar symptoms.
LD50 for the lethal dose for 50% of the population for Theobromine is:
1000 mg/kg 0r 1gm/kg of body weight in humans
Death by Chocolate Calculations:
1. FORMULA
2. GRAPH
3. Percentage

Death by Chocolate for DOGS
February 22, 2021
Chocolate can be fatal to dogs. As dogs are small they can easily eat enough chocolate to kill them. According to The Royal Society of Chemistry
The National Geographic has an amazing interactive chart for dog poisoning by chocolate.

Death by Chocolate for CATS
February 21, 2021Chocolate contains a poison called Theobromine.
LD50 for Theobromine for cats is 200mg.
LD = Lethal Dose. LD50= Lethal Dose for 50% of the population. Cats in this case. This is how poison toxicity is measured.
According to The Royal Society of Chemistry, cats are hypersensitive to Theobromine but, as cats cannot taste sweetness, they are rarely poisoned.







































