Grade 7

 
close-up of a human eye
Perception and Reality

Are things always as they seem?


Confused person seeing stars

What Causes Déjà Vu?

Source: Scientific American

It’s an eerie feeling: You walk into a place you know you’ve never been before but are overwhelmed by a sense of familiarity—a memory you can’t quite reach. Has this all happened before?
The sensation is known as déjà vu, and though it is hard to study, scientists are slowly figuring out why it happens.


Fire Pit

This year’s Olympic flame isn’t a flame at all—and that’s a good thing

Source: Fast Company

The 2024 Olympic Games in Paris had a goal of being the most environmentally-friendly games in history. One way to meet this goal was by asking the question: “What if the Olympic flame looked like a flame, but wasn’t one?” Learn how engineers came up with the illusion at the heart of the Olympic Games



Grassy area with a castle perched on a large ceramic urn

The Visual Illusions that Reveal How Our Minds Work

Source: Psychology Today

Disney is known for creating magical effects on-screen, but did you know they also use tricks and deception in their theme parks, too? This article discusses a few of the ways Disney–and other theme parks and entertainment venues–use optical illusions to create magical effects in real life.




Very tiny neurons.

Scientists have solved a classic optical illusion–and the answer’s in your neurons

Source: BBC: Science Focus

There is a famous optical illusion with two gray lines inside a number of black and white bars. The gray bars are the same color, but they appear lighter or darker depending on which bars are around them. Science was never sure why, but it seems the answer lies in you brain’s neurons and how fast they can fire.



How To Make Eyewitness Testimony More Reliable

Source: SciShow Psych (YouTube)

Eyewitness testimony can be really important when investigating crimes, but how can we make them more reliable? SciShow looks at the scientific and psychological evidence around several ways in which your memory can fail–and how we may be able to minimize these effects.


Man Getting Shocked While Repairing Lamp

The Dunning-Kruger Effect, or ‘why incompetent people think they’re amazing’

Source: TED Education

How good are you at basketball? What about playing an instrument? Psychological research suggests we’re not actually very good at evaluating our own abilities accurately. In fact, we frequently overestimate our own abilities thanks to something known as the Dunning-Kruger Effect.











* HMH is not responsible for the content of third–party websites.