Tutorial
Shows how to identify the significant figures in a given number and provides a few simple rules for expressing a given number correct to a specified number of significant figures.

Simple mental exercises at the end of each session help students to remember the rules learnt.

Practice
SigniFigures is capable of generating thousands of numbers for drills to ensure that the student masters what he has learnt.

The student may also enter his own numbers and let SigniFigures check whether his answers are correct. This feature can help the student do his homework.

Examples
Many examples are provided to help students who have difficulty in doing the sums.

Reports
You can print out a report at the end of each practice session. The report shows each sum with its correct answer and the student's answer marked. It also includes the percentage score, the average time taken to do each sum and other details.

SigniFigures will teach students how to identify significant figures and to round off answers correct to the number of significant figures specified.

Two modes:
￭ sums generated by the software (default mode)
￭ sums provided by the user

Requirements:

Macintosh Mac OS X 10.2 or higher:
￭ 5.0MB HD space, 16MB RAM
Macintosh Classic OS 8.1 - 9.2:
￭ 3.8MB HD space, 4MB RAM
￭ Screen resolution 800 x 600 at 16 bits or better

Here are some key features of "SigniFigures":

· up to 300 different sums per session
· accepts answers in ordinary or standard forms
· automatically formats numbers for easy reading, e.g. 123 456 789.001 9.

Limitations:

· 20 sessions trial

What's New in This Release: [ read full changelog ]

· New module on Standard Form (Scientific Notation)
· Conversion to Standard Form
· Conversion to ordinary form
· Addition and subtraction of numbers in Standard Form
· Multiplication and division of numbers in Standard Form
· Added 40 worked examples on Standard Form
· Fixed a bug which may, on rare occasions, produced wrong answers