I am an elementary Special Education teacher of a class of nine students, each with significant, and ranging disabilities. We spend most of our time working on foundational skills including math. I spent a lot of time searching for straightforward data probes that would simply test the student’s ability to subtract. Too often the skills progressed quicker than my students did, or it tested a wide range of skills when we needed to work on just one.
I designed this product to be a series of systematic data probes, beginning with simple subtraction, and (eventually) working up to triple digit subtraction with and without multi-step borrowing. I have found that to show true mastery of subtraction after learning both how to subtract, and then to borrow, the last step is to complete a page with mixed problems (some borrowing and some without borrowing) discerning when and when not to borrow.
In this packet you will find 12 probes, each with three trials. The probes range from single digit subtraction with single digit answers to triple digit subtraction that both involves and doesn’t involving borrowing. Each trial includes 10 problems to allow for clear and easy percentages. There are data sheets for each digit of skill, single, double, and triple, a whole class data sheet, as well as a blank sheet. The probes are as follows:
- 1 Single Digit Subtraction Probe
o Single Digit Subtraction, with Single Digit Answers
- 3 “Under 20” Subtraction Probes
o (Under 20) Double Digit Minus Single Digit, without any borrowing
o (Under 20) Double Digit Minus Single Digit, with all borrowing
o (Under 20) Double Digit Minus Single Digit, with and without borrowing
- 3 Double Digit Subtraction Probes
o Double Digit Subtraction, without any borrowing
o Double Digit Subtraction, with all borrowing
o Double Digit Subtraction, with and without borrowing
- 3 Triple Digit Subtraction Probes
o Triple Digit Subtraction, without any borrowing
o Triple Digit Subtraction, with all borrowing
o Triple Digit Subtraction, with and without borrowing
Since creating this product, my subtraction data probes are on hand, easy to use, and very straightforward. Having these as a resource creates consistent and thorough data. I can show true trends by using all three trials and the student’s mastery of the skills are obvious.
I hope this alleviates some stress from your life and makes your data tracking more efficient and quality! Enjoy!
My SpEd Life
Subtraction Data Probes Single, Double, and Triple Digit
by Jordan Nichols My SpEd Life
is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License