This is a straight forward, easy-to-read protractor app. Users can enter the angle by degree in the in-app keypad from 0 to 180 and the protractor will highlight the angle in red. Alternatively, users can measure an angle with the device by sliding the pointer to the appropriate location. The app clearly displays the angle and its supplementary angle in the protractor and extends the angle line the length of the screen to make it easier to take measurements. There is a convenient lock button so users can lock the pointer for readings. For those looking for a protractor app, this is a good, free option.

• Provides sufficient and varied types of practice problems to maximize understanding and generalization of the targeted skill/concept
• Manufacturer claims alignment with Common Core/Known Standards
• Presents educational concepts accurately
• Explains answers so students can learn from mistakes
• Better for teaching the skill to new or struggling learners
• Better for practicing or refreshing the skill
• Skills are practiced through authentic, meaningful problems (not just rote practice)

• Appropriate for a broad age range to use and enjoy
• Subject matter and problems are relevant, interesting and authentic to students
• Visually appealing to children in the target age range
• Provides virtual rewards or incentives after meeting specified goals or objectives
• Provides a "break activity" between academic problem sets
• Offers ongoing, progressive challenge
• Overall - Enjoyable. Given the option, students would choose this option

• Has a free or trial version
• Provides teaching guidance for adults to support the child and set appropriate goals
• Provides an age-appropriate tutorial/first time users can work independently
• Student should be able to use independently after first use
• Has a multi-player option to foster in-person collaboration or cooperation
• Multiple users can save a profile
• Student graduates to the next level or topic only after meeting a benchmark
• Can play without sound and not distract others
• Students can save work between sessions
• Can effectively understand and monitor student's progress (email report or in product)
• Provides options to play in languages other than English/Good for ELL
• Presents information in multiple formats (voice over, pictures and text, etc.)
• Overall - Easy to use

Free Protractor is an easy to use virtual protractor great for anything from checking your homework to helping with that DIY project. Colour coded angles make it easy for students to quickly get to grips with how a protractor works. Just tap or drag on the screen and the angle will follow your finger as easy as that. Free Protractor has many features including.
1. Camera mode the protractor appears superimposed on the camera view, great for checking the angle of real world objects.
2. Horizontal guide helps you to keep the protractor level.
3.Angle types this allows you the option of viewing the angle types e.g. acute obtuse.
4.Customisable use the apps settings to show or hide the various features depending on what you are doing.