## GeoGebra 5

Developer: International GeoGebra Institute (IGI)

Current Version: 5.0.321

Last Updated: 2 months ago

4.5

Description:

GeoGebra 5

GeoGebra (www.geogebra.org) is free dynamic mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. Interactive teaching and learning resources created with GeoGebra can be shared and used by everyone at www.geogebra.org

GeoGebra is the world’s favorite dynamic mathematics software, has received numerous educational software awards, and supports STEM education and innovations in teaching and learning worldwide.

* Free to use software for learning, teaching and evaluation
* Fully interactive, easy-to-use interface with many powerful features
* Available in many languages
* A fun way to really see and experience mathematics and science
* Adaptable to any curriculum or project
* Used by millions of people around the world

Release Notes:

Fix for bbbb: r=2θ
fix for drop-downs that change length
3D View: fix for plotting a(x, y) = abs(x + y ί)
3D View: fix for back-to-front angles
CAS View: improve form of Numeric[121V^2 m 3.14159265359 (0.0004 / W / Ω)]
fix for selecting Norwegian Nynorsk
solve confusion with C_1 and C_{1}
On-screen keyboard: fix for accents keys
CAS View: fix for Angle[10deg + 20deg]
fix for dragging 3D polygons in 2D
fix for inverting segments in degenerate circles
CAS View: fix for f(1/x)
On-screen keyboard: fix for Shift key
3D View: fix for tracing conics
fix for y = (h(x))^2
fix for Sequence[RectangleSum[x², n, n + 1, 1, 0], n, 0, 3]
faster / more accurate Taylor Polynomials eg TaylorPolynomial[1/x, 2, 10]
Input Boxes: fix for entering a formula after a number
set background color from the spreadsheet when an object is created / renamed (if necessary)
CAS View: fix for f'(x) for eg f(x) = K(x)/x
fix for Input Boxes on iOS

SHOW LESS ...

5/5
Version 5.0.42.0
Review by QuantumAnomaly

Takes a bit of getting used to, but is a powerful visualization tool - I recently came to GeoGebra having a background in design, not mathematics. I explore mathematical relationships of circles, polygons, etc out of curiosity and for integration into artwork. Apps like Blender and Inkscape, while great for design, do not offer mathematical precision for analyzing geometric relationships. I needed software that was visually oriented yet more specialized for math and in GeoGebra I found it. At first I gave this a 3-star rating because of initial frustration. After getting to know this app a bit better I feel it deserves more like a 4 or 5. My initial frustration was partly valid - the interface and construction tools could be implemented better. However I admit that half of my frustration was due to my expectations of how such an app should function and wanting it to behave in a way that is more visually intuitive versus how it actually behaves which is more mathematically exact. For example, I am used to being able to freely scale or rotate any geometric form in the design apps I use. In GeoGebra if you want to scale or rotate your construction you must change the value of the underlying shape that the rest of the construction is based on, and this may require changing how your construction is built. Also shapes can have dependencies in the sense that deleting a shape can cause other shapes it was derived from to also be deleted. I did not see the logic in this, but after discovering there is a feature that allows for all the steps of construction to be viewed in a sequence I now can appreciate that this app aims to preserve the exact recipe for how forms are constructed, and mathematically that is more valuable than being able to simply transform any shape on a whim. I still wish for better snapping implementation, a quick tool for generating inscribed or circumscribed geometry, more keyboard shortcuts, and the fixing of various annoyances like having to hide a polygon before you can select what's underneath it. But over all this is a great app. Where it could use improvement is in the interface and usability. Mathematically speaking it has been great for me and allowed me to take measurements with precision that was heretofore impossible for me using other software. I have also learned a few mathematical formulas as a result of using this. So for that I have to give it 5 stars. Being free and open source is also a huge plus. It does have some bugs and quirks but there is no other software like it that can compare.

Found helpful by 24 out of 26 people
1/5
Version 5.0.42.0
Review by Harrison WIlliams

NO - i will never use this again

Found helpful by 2 out of 24 people

### More Reviews for Current Version

4/5
Version 5.0.321
Review by Horsard

The way to use is too complicated - I was so excited to download such a free and helpful mathematic graphic app. The functions are all good, and it is easy to draw a line or something. However, it is still hard for me to do the reflection and such things, and sometimes the points and lines will just stuck there and you have no idea how to fix it. Considering it a really high level technology, but not as easy to read the instructions that well.

Found helpful by 0 out of 0 people