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Colleen Young

@colleenyoung.bsky.social

Mathematics Tutor and Consultant.

1,137 Followers  |  825 Following  |  220 Posts  |  Joined: 08.10.2023  |  1.876

Latest posts by colleenyoung.bsky.social on Bluesky

For Valentine’s Day 2026 Checked and updated annually, ideas and resources for Valentine's Day ...(Whilst some of these resources were created some time ago, they are still ideal for Valentine's Day.) Desmos - math-o-grams From Desmos, send one of their great math-o-grams to your mathematical friends! For an alternative source of Valentine's cards, we can turn to NASA! Alternatively, try this post…

For Valentine’s Day 2026

Checked and updated annually, ideas and resources for Valentine's Day ...(Whilst some of these resources were created some time ago, they are still ideal for Valentine's Day.) Desmos - math-o-grams From Desmos, send one of their great math-o-grams to your mathematical…

08.02.2026 17:45 — 👍 0    🔁 0    💬 0    📌 0
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Problem of the Week 158!

Please do not comment the solution so others can work it out too. Instead, like this post or comment a thumbs up if you think you have the correct answer!

The solution will be posted in the comments on Thursday afternoon.

#Problem #UKMT #Maths

03.02.2026 08:00 — 👍 2    🔁 2    💬 1    📌 0
A poster demonstrating how you can use a three-step plan of specialising, conjecturing and generalising to solve mathematical problems. The poster is split into four areas:

1) The classic problem "How many squares are on a chessboard?"
2) Solving the problem with much smaller boards.
3) Arriving at a conjecture involving square numbers.
4) Generalising the problem ofr all board sizes.

A poster demonstrating how you can use a three-step plan of specialising, conjecturing and generalising to solve mathematical problems. The poster is split into four areas: 1) The classic problem "How many squares are on a chessboard?" 2) Solving the problem with much smaller boards. 3) Arriving at a conjecture involving square numbers. 4) Generalising the problem ofr all board sizes.

Specialise, Conjecture and Generalise.

A three-step plan to encourage and develop mathematical thinking.

I'm going to use this thread to share a few of my favourite tasks that lend itself nicely to this idea.

It would be amazing if everyone added their own in the replies.

18.01.2026 09:54 — 👍 34    🔁 11    💬 5    📌 3

Love that!
Happy Birthday, Emily!

29.01.2026 17:18 — 👍 1    🔁 0    💬 1    📌 0

I have not used it I am afraid.
I do like Integral for independent learning.

27.01.2026 11:27 — 👍 2    🔁 0    💬 1    📌 0

One last question - the text boxes all have a bar at the top, saying MOVE(DBL-CLICK DLETE), can I remove that, please?

25.01.2026 16:31 — 👍 1    🔁 0    💬 1    📌 0

Of course - Ok, thank you. Don't worry about updating

25.01.2026 16:17 — 👍 0    🔁 0    💬 0    📌 0

I think I am missing something, Dan. To upload, you need an id, yes? I have Desmos pages which are shared with a web address.

25.01.2026 15:55 — 👍 0    🔁 0    💬 1    📌 0

I think I misunderstood this. Is it only for files created within the Demos classroom, not any Desmos file?

25.01.2026 15:43 — 👍 0    🔁 0    💬 1    📌 0

I like the sound of this, Dan.

25.01.2026 09:41 — 👍 1    🔁 0    💬 1    📌 0
A game from Henk Reuling where the player has to identify the Modulus graph displayed.

A game from Henk Reuling where the player has to identify the Modulus graph displayed.

We’re enjoying this from henkreuling.nl

Location will be shared below.

23.01.2026 08:25 — 👍 3    🔁 1    💬 2    📌 1

The MAT is dead, long live the TMUA.

(Which always sounds in my head like "The Metropolitan Transit Authority")

#UKMathsChat #ALevelMaths

19.01.2026 18:41 — 👍 5    🔁 1    💬 0    📌 0
Set of questions where you have to represent inequalities on a numberline or, given the diagram, state the inequality.

Set of questions where you have to represent inequalities on a numberline or, given the diagram, state the inequality.

A screenshot of selected objectives from the Inequalities topic in the MathsBot curriculum.

A screenshot of selected objectives from the Inequalities topic in the MathsBot curriculum.

Update: Yesterday I spent some time improving the inequalities topic. Still plenty to be done, but these are good enough for now.

17.01.2026 10:55 — 👍 12    🔁 5    💬 1    📌 0
Randomly generated consolidation exercise on "Reading and writing numbers up to 10,000,000."

Randomly generated consolidation exercise on "Reading and writing numbers up to 10,000,000."

The lists of objectives for the "Reading and writing numbers" topic.

The lists of objectives for the "Reading and writing numbers" topic.

Update: Some boring but useful questions on "Reading and writing numbers" added to the generators.

mathsbot.com/unit?id=896

16.01.2026 12:52 — 👍 7    🔁 2    💬 0    📌 0
Fill in the blanks task on position vectors suitable for A-level Maths students.

Fill in the blanks task on position vectors suitable for A-level Maths students.

Fill in the blanks on modelling with vectors suitable for A-level Maths students.

Fill in the blanks on modelling with vectors suitable for A-level Maths students.

New #ALevelMaths vectors resources from last week's Year 12 lessons:
✨Modelling with Vectors Fill in the Blanks
✨Position Vectors Fill in the Blanks
Find them at www.draustinmaths.com/a-level
#UKMathsChat #MathsToday

13.01.2026 13:28 — 👍 13    🔁 5    💬 1    📌 0
First Look - Casio fx-991CW+ UK Second Edition #casiocalculator
YouTube video by The Calculator Guide First Look - Casio fx-991CW+ UK Second Edition #casiocalculator

First Look - Casio fx-991CW+ UK Second Edition #casiocalculator youtu.be/2v75a0qkAyE?...

#casio #ukeducation @casioeducationuk.bsky.social

09.01.2026 13:16 — 👍 3    🔁 2    💬 0    📌 0
Casio fx-991CW+ UK 2nd Edition From a favourite video author, see this first look at the new edition of the Casio fx-991CW+ UK 2nd Edition from The Calculator Guide. On the Casio website, you can find comprehensive details of the calculator here.

Casio fx-991CW+ UK 2nd Edition

From a favourite video author, see this first look at the new edition of the Casio fx-991CW+ UK 2nd Edition from The Calculator Guide. On the Casio website, you can find comprehensive details of the calculator here.

12.01.2026 09:18 — 👍 1    🔁 2    💬 1    📌 0
A screenshot of the most recent GCSE maths grade boundaries.

A screenshot of the most recent GCSE maths grade boundaries.

GCSE maths grade boundaries for Nov '25.

mathsbot.com/gcse/boundar...

08.01.2026 08:24 — 👍 5    🔁 4    💬 0    📌 0
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GCSE Mathematics Grade Boundaries for November exams 2017–2025 Foundation Tier (to be updated for Eduqas when they post theirs)

08.01.2026 08:25 — 👍 3    🔁 3    💬 2    📌 0
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Cumulative grade distributions for GCSE Maths by board: November exams 2017-2025

08.01.2026 10:21 — 👍 0    🔁 2    💬 1    📌 0
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GCSE Maths resit entries are up on last November by 4.6% to 75203, but the number achieving grade 4 or above has stayed much the same (well, up by 0.5%) at 16800 or so (allowing for rounding errors)

08.01.2026 10:26 — 👍 3    🔁 3    💬 1    📌 0
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Fill in the blanks … Fill in the blanks ... brilliant resources for the introduction of new ideas

She does indeed, all included on the page linked to in my post. colleenyoung.org/2021/10/10/f...

04.01.2026 14:26 — 👍 2    🔁 1    💬 1    📌 0
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Fill in the blanks... Fill in the blanks... resources to get #maths #math students thinking hard. #mathschat #mathchat #mathscpdchat

Absolutely love fill in the blanks!
I regularly use these.
See colleenyoung.org/2023/03/12/f... for a collection. #iTeachMaths

04.01.2026 13:05 — 👍 5    🔁 2    💬 1    📌 0

I have found they are widely banned.

04.01.2026 13:02 — 👍 3    🔁 0    💬 2    📌 0
Two strips of practice questions for students studying fractional and negative indices. The first strip involves simplifying algebraic powers and roots and writing them in index form. The second strip involves solving equations with unknown indices.

Two strips of practice questions for students studying fractional and negative indices. The first strip involves simplifying algebraic powers and roots and writing them in index form. The second strip involves solving equations with unknown indices.

Happy New Year! Thank you to everyone who continues to support my site through spreading the word, buying coffees and reporting mistakes. Many more resources to come in 2026, starting with some harder indices practice strips I've made for my Year 9s next week. Enjoy!
#MathsToday #UKMathsChat

02.01.2026 09:32 — 👍 40    🔁 9    💬 1    📌 0
Happy 2026! Here's when 2026 starts around the world! It's that time of year again, and we can play the 2026 NCTM Year Game in our January lessons. Use the digits in the year 2025 and the operations +, −, x, ÷, sqrt (square root), ^ (raise to a power), ! (factorial), along with grouping symbols to write expressions for the counting numbers 1 through 100.

Happy 2026!

Here's when 2026 starts around the world! It's that time of year again, and we can play the 2026 NCTM Year Game in our January lessons. Use the digits in the year 2025 and the operations +, −, x, ÷, sqrt (square root), ^ (raise to a power), ! (factorial), along with grouping symbols to…

01.01.2026 01:00 — 👍 6    🔁 2    💬 0    📌 0
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Topic Frequency Data updated to include J25 and N25. Spreadsheet download here: www.1stclassmaths.com/topic-freque...

29.12.2025 23:18 — 👍 6    🔁 4    💬 0    📌 1
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Problem of the Week 153!

Please do not comment the solution so others can work it out too. Instead, like this post or comment a thumbs up if you think you have the correct answer!

The solution will be posted in the comments later in the New Year.

#Problem #UKMT #Maths

30.12.2025 08:00 — 👍 3    🔁 2    💬 1    📌 0
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Playful Math Carnival 183 Welcome to the 183rd edition of the Playful Math Carnival. Begun by Denise Gaskins, previously known as Math Teachers at Play. If you'd be i...

#playfulmath carnival 183! mathhombre.blogspot.com/2025/12/play... Writing on teaching, fun math, puzzles, games, art...

27.12.2025 02:22 — 👍 12    🔁 6    💬 1    📌 1
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Here’s a festive puzzle for you to round off the year!

A big thank you to all the teachers, students and volunteers who support UKMT — we couldn’t do this without you.

The UKMT Team

PS - view the solution on our website: ukmt.org.uk/puzzles

#mathstoday #UKMT

24.12.2025 10:17 — 👍 4    🔁 3    💬 1    📌 0

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