Peter Gottlieb

Rated 4.25(4) — Peter Gottlieb

Here is an app that can calculate 27 different formulas useful in financial transactions. This latest version of the app has added a numeric keypad (with nice large keys) for data entry, as an alternative to the 2 modes of data entry in the original...

Rated 3.35(94) — Peter Gottlieb

Long division need not be the traumatic learning experience for 4th and 5th graders. This app (div2) does all the tedious multiplications and subtractions, leaving the student to learn and practice the basic long division skills of correctly guessing...

Rated 0.00(0) — Peter Gottlieb

Here is the best tool for improving a student's skill at factoring. The app presents a target number to be factored, and the student responds by entering a prime factor (2, 3, 5, 7, 11) of that number. For example, if the initial target number is 210...

Rated 4.33(6) — Peter Gottlieb

This app raises the algebra drill program to a whole new level. Instead of simply presenting the problem and leaving the student to work out the steps on paper, the student is lead through a succession of steps, with instant feedback at each step. In...

Rated 4.25(4) — Peter Gottlieb

Here is the answer to those tiresome multiplication table exercises with your child. This Android app will flash a sequence of multiplication table questions, and you child will enter the answers to each using a virtual numeric keypad with nice large...

Rated 4.00(1) — Peter Gottlieb

Can you read a number that's flashed on the screen for only a few milliseconds? This game will start with a few hundred milliseconds and reduce the duration until you can no longer enter the number correctly. You can select the number of digits; 3 is...

Rated 4.57(7) — Peter Gottlieb

Most 2nd and 3rd graders struggle with subtraction problems that require borrowing. Having to strike-through numbers and then stack new numbers above them is a confusing process that leads to frustration and under achievement. Here is the answer: let...

Rated 0.00(0) — Peter Gottlieb

Here is a division drill that will develop skills in both basic division and mental arithmetic. Yet it's simple enough to do while watching children's TV. The student can begin with no remainders: dividing integers from 3 to 9 (called divisors) into...

Rated 0.00(0) — Peter Gottlieb

Here is a division drill that will develop skills in both basic division and mental arithmetic. To make the drill-pill easier to take, the program is simple enough to do while watching children's TV. The student can begin with division problems having...

Rated 0.00(0) — Peter Gottlieb

Here is a game that tests your visual reflex, your short-term memory, and your ability to resolve a rapid sequence of images. Randomly selected digits (0-9) are flashed briefly on the screen in a rapid sequence. You are then asked to recall the sequence..

Rated 3.00(2) — Peter Gottlieb

Here is a painless way for the algebra student to develop proficiency in solving simultaneous linear equations. Here is a drill program that leads the student through 8 steps to solve 2 simultaneous linear equations with 2 unknowns. These 8 steps would...

Rated 4.00(1) — Peter Gottlieb

This app is for anyone who has to calculate formulas: high school and college students in science, engineering, or business courses, as well as teachers or practitioners in any of these fields who need to get quick results when they are not near their...

Rated 3.67(3) — Peter Gottlieb

Here is a drill program that will improve the essential skills for any intermediate algebra student. This is an exercise in the factoring of quadratic expressions. Such an expression can be written as the product of 2 factors, each factor consisting...