Everyday Science
Why Soap Bubbles Show a Shifting Rainbow
Why do soap bubbles show a shifting rainbow? See how light in the thin film produces shifting colours, and learn why…
The bulletin archive
All reading
Explore explanations of familiar ideas, language, objects and routines. Each piece starts with a question and follows it toward a clearer understanding.
Words and Meaning
A Dictionary or a Thesaurus? Choose by the Question You Have
A dictionary or thesaurus can answer different writing questions. Choose the right one to check meaning, spelling…
Objects and Design
The Zipper’s History and How Its Design Works
Explore the zipper’s history, from early fastening ideas to the familiar zip, and learn how its slider and…
Habits and Ideas
The Myth That Multitasking Means Doing Two Things at Once
Understand multitasking and task-switching, spot the hidden transitions in your day, and choose a simple way to give…
Time and Memory
A Personal Time Capsule Without the Clutter
A personal time capsule can preserve what mattered without filling a box: choose a few durable keepsakes and record…