Dorsett Atari Mathematics (Decimals and Percents) MP ; Copyright (C) 1983 Dorsett Educational Systems, Inc.#

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This is an archive of the "Mathematics (Percents and Decimals)" 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 (mp1 through mp16) 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 May/June 2015.

Album: Mathematics (Percentages and Fractions)
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


mp1 Decimals and Fractional Equivalents
mp2 Place Values of Decimal Point
mp3 Additions & Subtraction of Decimals
mp4 Multiplication of Decimals
mp5 Changing Fractions to Decimals
mp6 Rounding Decimals, Dollrs, and Cents
mp7 Changing Percent to Decimal Fractions
mp8 Part percent, total in percent
mp9 Solving for a Missing Percent Value
mp10 Reciprocals in Simple Equations
mp11 Percent of one Number to Another
mp12 Interest on Money, Part 1, The Principal
mp13 Part 2, Interest FOrmula, Installment
mp14 Part 3, discounted installment--interest
mp15 Part 4, Comparing Interest
mp16 Part 5, Simple Interest on Savings

Tracks (size in sum: 1.02 GB):


Dorsett Atari Mathematics (Decimals and Percents) - cassettes with uneven numbers

Dorsett Atari Mathematics (Decimals and Percents) - cassettes with even numbers