Geometry— Math with bad drawings

Twenty Questions (Of Maddening, Delicious Geometry) mathwithbaddrawings.com

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Sg Population Pyramid in 2025 ( percentage )

Appreciating Average

https://docs.google.com/spreadsheets/d/1T1Jx4Q3P2auxGtKZvuN34R5uGfNAKxhfemBRD6CDYXo/edit?usp=drivesdk

Average appreciation docs.google.com

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Area Diagram— dealing with whole numbers ( #sides #shapes)

Area Diagram 2 --- dealing with decimals

Sides of Pentagon vs sides of Triangles — Area Diagram intro WS

Sec1 Prime factorisation

P5 Area of triangles -- Identifying bases and heights for the three types of triangles

https://www.instagram.com/reel/C5OFlIGRngJ/?utm_source=ig_web_copy_link&igsh=NTc4MTIwNjQ2YQ==

https://www.instagram.com/reel/C5OFlIGRngJ/?utm_source=ig_web_copy_link&igsh=NTc4MTIwNjQ2YQ==

s

Division of fractions --- KCF

https://www.instagram.com/reel/CnTwKWvoRfj/?utm_source=ig_web_copy_link&igsh=NTc4MTIwNjQ2YQ==

https://www.instagram.com/reel/CnTwKWvoRfj/?utm_source=ig_web_button_native_share&igsh=NTc4MTIwNjQ2YQ%3D%3D

See this Instagram post by @changchengliang

Chang Cheng Liang on Instagram instagram.com

Solving a money problem using Area diagram

https://www.instagram.com/p/C6f5ig7RMTE/

https://www.instagram.com/p/C6f5ig7RMTE/

Highest mountain vs deepest seabed on earth

Watch "The Percentage Sign (by CCL)" on YouTube

https://youtu.be/VWoW0M8PlUs?si=EwfBbcIZAX1c_sJs

https://youtu.be/VWoW0M8PlUs?si=EwfBbcIZAX1c_sJs

Regards,

Mr Chang C.L.

_________________

http://MrChang.com/

P6 Division of fraction

https://www.instagram.com/reel/CnTwKWvoRfj/?igsh=Znd1MGZrNnZ2M3px

Chang Cheng Liang on Instagram instagram.com

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Introduction to P5 Rate

• Intro Rate 
• Jingle Bells https://youtu.be/3CWJNqyub3o?si=miDXmbdfTwqEaPqx

Jingle Rate

 

Dashing to connect 

Two different quantities

Do not use the equal sign (=)

It's not appropriate!

Instead we use a line

to relate two quantities

But remember to ensure it is 

much longer than the minus sign (-) !

Jingle rate, Jingle rate

Jingle all the way

O what fun it is to ride

on a simple longer line

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Applications of Prime Factorisation

https://www.instagram.com/p/DTcFyBrE9ox/?igsh=MTQ3ZXM2dzN2MHR1dA==

P5 Ai Tong 2025 Review1

Laws of logarithm

•Logarithm Laws & Properties ♡ ㅤ   ❍ㅤ     ⎙    ⌲ ˡᶦᵏᵉ ᶜᵒᵐᵐᵉⁿᵗ ˢᵃᵛᵉ ˢʰᵃʳᵉ ☞Double tap if you like my post. ☞Drop your comment in the comment section. ☞Turn on post notification to get regular and instant update. ☞Don't forget to hit like & share with your friends. Thank you so much for following! Follow @calculus_lover123 Follow @calculus_lover123 Follow @calculus_lover123 #logarithm#logproperties#emogi#mathematics #calculus

Mathematics Tutor/Teacher • Instagram photo instagram.com

https://www.instagram.com/p/DTVJCWyCNUY/?igsh=NDR5OTZjcWpsMmd5

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Elevation - Wikipedia (P5, P6 measurement

https://en.wikipedia.org/wiki/Elevation

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P5 numbers, fractions

Keprekar’s Constant 6174

https://www.instagram.com/reel/DSLB0ntkj3a/?igsh=dWYxdWF3NHJuMDhi

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Estimation using your hand

2025 Aggvent Calendar | topic: Measurement

https://andymath.com/2025aggventcalendar/

2025 Aggvent Calendar | andymath.com

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Interesting fractal patterns

https://www.threads.com/@fascinating.fractals/post/DR6kew1km7g?xmt=AQF0GVt6jo66ExbaV83yCJwMAEtAzbM1JBfFh46qN6d3law6P71Pz6Tp_eVc6RqLJW1QEuzR&slof=1

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How can a square be cut into an equilateral triangle #science #knowledge

https://youtube.com/shorts/CkKFcZkbOKk?si=eFqoMRNLMK0dxzIq

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Divisibility Rules of of 1 to 10 (aka testing for multiples of 1 to 10)

https://www.instagram.com/p/DRjrUi-CAX3/?img_index=9&igsh=Y3U0dHIwZjU5YnAw

Math Animations on Instagram: "Divisibility rules give you a quick way to see whether a number can be divided by a small integer without actually doing the division. For two you simply look at the final digit and if it is even then the whole number is even. For three you add all the digits and if that total divides by three then so does the original number. To test for four you treat the last two digits as their own number and see whether that divides by four. Five is even simpler: any number ending in zero or five will divide by five without a remainder. When you want to check six you apply the rules for two and three – a number that meets both will divide by six. The rule for seven asks you to double the last digit and subtract it from the number formed by the remaining digits; if that result divides by seven then the original number does too. For eight you look at the last three digits and see if they divide by eight. Nine works like three but with nine instead – if the sum of the instagram.com

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