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Swiss army knife, it's useful for audience to have many tools in a small pack.

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people are familiar with the sign on the garbage bin due to their daily life experience, so they can easily understand the classification of each garbage bin

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The purpose for this design is to present the seat for the user and let people to be able to park their bike. In addition, this type of seat also can protect the tree which avoid the mud to flow out.

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a water cup, the design of it is easy to understand its function, it's a water container and its handle is for the audience to lift up the cup. It's simple but also easy to use.

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the material of the thermos is stainless steel, which can maintain the temperature of water to constantly stable. Also, the lid is easy to open by just pressing the button on it.

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this is a chair that can let user to assemble many pieces and find a good way sitting on it

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Iphone, iphone have easy system to learn, the instructions are simple, so there's less errors.

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this chair is prone to adjust its height, so the customers could easily shift the height in order to fit tables of different heights.

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When people see two students on the sign, they will know that there will many students appear in the front. Also, the red sign is shown. Thus, drivers will slow the speed

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this is a iPad case for kids, the color and the shape are really lovely, so it has considered younger audiences's perception.

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there are shoes designed in different shape , which has consider on people with different shape of feet

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the designer use different color to differentiate the shapes, so it's easy for kid to memorize the shape with the color

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On the top, the designer shows the searching bar, same as other interent. However, users can't group the subscription which is a drawback for user experience.

The designer shows the subscription, watching history, etc at left column.

The designer uses large space in the middle for users to choose the video that they are interested.

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the designer has splited the interface of YouTube into 3 parts, which makes it looks simple, they are the upper part, the left banner and the main interface part. the main interface is showing the videos created by the YouTuber subscribed by the user, also shows the cover so use would be prone to understand the content of vedio. The upper part is the classification of the video and relative recommendation vedio provides for user to find the vedio they like to watch quickly. And the left part is a series of functions like history and the video the user liked. These three part divided the interface in a clear way which reduce the time users spend to learn how to use it

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•Simplicity and ease of use
This is a sign outside the toilet showing the male and female toilets. The designer connects two words of male and female to use a simple way to show the direction.

•  Intuitive logic and organization and low memory burden
When people see this sign, they don't need to think about it and everyone knows the letter "women" is longer than "men", so people will decide intuitively in front of the sign.

•  Visibility
The designer utilizes the letter "women" and "men" to connect with the column of the arrow.

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iPad could be considered a good design since it meets these characteristics of good user-product interface

Simplicity and ease of use

iPad is designed in a thin and flat shape, which is easy for people to carry around. The function button on the top is the shutdown button, the customer can turn off and turn on the iPad by simply pressing the button, also for the volume button, just need to press it then the customer can adjust the volume. In addition, people can use the iPad by touching the screen or using an apple pencil.

Intuitive logic and organization and low memory burden

Mapping

The arrangement of the iPad interface is ease for understanding its function. The new iPad only has one page with all of its basic apps on it. All of the apps have their function written under the icon to inform the user. The icon is also related to its function, like the icon of the clock app is a clock. Aside from this, the iPad has almost the same function as iPhone, from the app's icon to the functional button. Therefore, if the user used iPhone before, then the time duration for he/she to learn how to use the iPad would be reduced.

Visibility

When you turn on the iPad, the screen should be visible so the user can know where to touch, in order to access the app.

Feedback

while the user is touching on some of the app, then the screen would shows the interface of that app, so the user can know the iPad is giving a response to the action. Other than this, if user press on the volume button, the screen would show a bar that indicates the percentage of volume to response their action.

Affordance

Each app in iPad affords its own function like map, clock, camera, etc.

Constraints

the charging port of the iPad is only allow the type-c charger to plug in, this constraints can ensure the users would not accidently plug other chargers into the port.

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Affordance simplicity
Explanation There's no bars on the swinging door, which can tell people they should push the door instead of pull the door. Thus, the design of the door is very simple.

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characteristic: affordance
explanation: the door doesn't have the handle on it, which tell the users intuitively about the door can only be push.

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Affordance & Simplicity
- There are only number buttons on the panel, it's simple design, which help the audience to understand that the numbers on the buttons are matching the floor numbers.

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Characteristic mapping
Explanation When the plates and food are presented on the table, users can have a clear idea of the route of the cafeteria.

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characteristic: affordance
explanation: the handle has an obvious shape for user to grab and lift it up in order to release the water to flow out of the tap

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Affordance & Contraints
- There are a handle on the tap which help audience to understand the water will come out when u pull the handle. Additionally, the handle can only goes up and down, it limits the way to use the product, guide the audience to find the correct way to use it.