2.1.3

Editing images

Guiding Question

How to adjust images for teaching effectively?

Preamble

Images are a visual aid that is very commonly used in teaching, playing a significant role in ensuring the effectiveness of lessons. In teaching chemistry, using visual and vivid images helps students think more efficiently, absorb the lesson, and increase their interest in learning; especially when learning about reactions, processes, and theories that are abstract and difficult to visualize. Image sources for teaching are currently wealthy, thanks to the development of ICT. However, to get quality images consistent with pedagogical ideas, teachers need to learn about photo editing support tools for teaching.

Photo editing techniques

Read the survey questions, fill in your answers in the boxes below, and click Submit.

What tools do you commonly use (online and offline) to capture, edit images for educational purposes, and teaching?

View the results of class discussion.

You can use some software pre-installed in Windows or the Microsoft application suite to perform basic operations such as cutting, merging, deleting details, inserting notes, removing background... View the results of class discussion.

Use Snipping Tool software

Snipping Tool is a program pre-installed in Windows Vista, 7 and 8 operating systems. This tool helps users capture part or all of the content on the screen and save it as an image file.

Usage steps:

1. Open the program

Method 1. Start, open All Program -> Accessories

Method 2. Start, type Snipping Tool

2. Take photos

The New button lets you take a new photo, Cancel cancels the current action, and Options allows you to change the properties of your photo.

There are 4 shooting types when you click New:

· Free-form Snip: draw any closed line around the image to be captured.

· Rectangular Snip: drag and drop a rectangle to capture it.

· Windows Snip: capture a window or a dialog box on the screen.

· Full-screen Snip: capture the entire screen (Full Screen).

3. Simple photo editing

Tools are provided in the Edit window (freehand drawing, highlighting, eraser).

4. Save the photo

Select the Save button (or disk icon), name and choose a path for the photo. Photos are saved in JPG, PNG, GIF and MHT formats.

With the Windows 10 operating system, Spinning Tool is replaced by another similar software called Snip & Sketch. In particular, we can quickly open this tool with the key combination Windows + Shift + S.

Remove image background with MS PowerPoint

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