## Dorsett Atari Mathematics (Numbers) Working with Numbers MN ; Copyright (C) 1983 Dorsett Educational Systems, Inc.#

### Source from archive.org#

This is an archive of the "Mathematics (Numbers)" educational program published by Dorsett Educational Systems, Inc. in 1983. This was originally packaged as a set of 8 cassette tapes for use with Atari 400 and 800 computers and the Educational System Master Cartridge.

The "raw recordings" directory contains the unaltered recordings from cassette, one file per tape, with both sides of each tape in the same file. You probably don't want to use this folder.

The main files (mn1 through mn16) are likely the versions you want to use with your Atari or emulator. These have been split into 16 files (one per tape side). The audio levels have had their volume normalized, as well as any pops and clicks removed, and subsequently repaired on the data tracks. Each tape has been verified to work on the Altirra emulator.

Finally, photos of the cassette tapes are included.

The work of digitization and audio cleanup was done by Kay Savetz and Thomas Cherryhomes in June 2015.

Album: Mathematics (Numbers)

Year: 1983

Original Format: Atari Educational System (Dorsett Talk & Teach)

Digital Format: Microsoft WAV, 2 channel, 16-bit 44100Hz sample rate

Digitized by: Kay Savetz/Thomas Cherryhomes

Tracks:

Mn1 Learning Number Digits

Mn2 Learning Number Meanings

Mn3 Fundamental Drills in Addition

Mn4 Fundamental Drills in Subtraction

Mn5 Drills in Multiplication

Mn6 Fundamental Drills in Division

Mn7 Greek and Roman Numeration

Mn8 Babylonian and Hindu-Arabic

Mn9 Base Ten Raised to Powers

Mn10 Grouping and Re-Grouping

Mn11 Lines and Angles: Naming, Adding

Mn12 Triangles, Squares, Rectangles, Circles

Mn13 Fractions: Equal an Unequal Parts

Mn14 Fractions: Equal Parts of a Whole

Mn15 Writing and Comparing Fractions

Mn16 Naming, Defining Parts of Fractions

Tracks (size in sum: 1.33 GB):