Jdee

I am a secondary maths teacher with a deep interest in maths and an interest in deep maths. Abstract Algebra/Groups/Rings +Probability/Combinatorics.

[Jdee @MrDee_Maths]

@missradders I think it’s perfectly acceptable to list them as desirable but there’s plenty of phenomenal teachers without them and far too many appalling ones with them. If you want to know how good a teacher somebody is you just need to see them teach. Everything else irrelevant.

[Jdee @MrDee_Maths]

@eiaccb @moonboi_ But multiplication by 0 is still defined in the field, it’s just that only the nonzero elements form a group under multiplication.

[Jdee @MrDee_Maths]

@ProfSmudge @C_Hendrick Interesting comparison- we’ve had this at quite a few insets now, do you have a decent meta-analysis in the public domain I could look at?

[Jdee @MrDee_Maths]

@LearningMaths But not a Venn diagram! A shame as there are some nice constructions of 4 set Venn diagrams.

[Jdee @MrDee_Maths]

@MrMattock @KerryFi72237054 @Darrenmacey Literally couldn’t have made this clearer

[Jdee @MrDee_Maths]

@LayeredStrange https://t.co/N7EKP3bv88

[Jdee @MrDee_Maths]

@Mathematical_A That is absurdly sad. A great role model and communicator.

[Jdee @MrDee_Maths]

@honeypisquared @MrMattock None of these. Each ones looks like a different textbook front cover. Paraphrasing Mirzakhani, you need patience to see the true beauty

[Jdee @MrDee_Maths]

@NotionTeachers Shoot

[Jdee @MrDee_Maths]

@mpershan Rationalising the denominator isn’t useless at all- it’s is extremely useful to know what quantity of a number is rational and what quantity is irrational.

[Jdee @MrDee_Maths]

@gplunkett58 @CharlieDonovan @DavidAAldridge It helps the writing flow. 🤢

[Jdee @MrDee_Maths]

@Transum And as a follow up- the multiplying by 2 is inevitable, and since 5 odd out of an initial 10 and 4 even out of subsequent eight both give a half, each expression contains a one, and a 5 out of 9.

[Jdee @MrDee_Maths]

@Transum Hi, is this what you mean? (Very rough workings!)

[Jdee @MrDee_Maths]

@MaxTheMaths Coconut pushed over square

[Jdee @MrDee_Maths]

@Ridermeister Can you give a loose account of what’s going on at UKMT? Trying to piece it together from various tweets is proving difficult.

[Jdee @MrDee_Maths]

@MaxTheMaths @kyledevans 312211

[Jdee @MrDee_Maths]

@ChrisFMaths Step functions!

[Jdee @MrDee_Maths]

@rosharma08 @MathsImpact No. Just that instead of I, j, k… as basis vectors we have 1, x, x^2….

[Jdee @MrDee_Maths]

@Whitehughes @ParkerMaths I like to to prove it from first principles with no need for the chain rule. Always snags me that a more formal proof of the chain rule isn’t particularly accessible for students