Addition and Subtraction Within 20 Progress Monitoring Probes

About this resource

One skill, start to finish. A mixed addition and subtraction IEP goal, six equivalent probe forms that measure it, and a graph scaled to the probe. Baseline on Monday, goal written by Tuesday, first data point on Friday.

Every form is five additions and five subtractions, vertical and untimed, and EVERY problem crosses ten: the sum goes above it, the difference drops below it. That is what separates this probe from the within-10 probes before it, and it is why the errors split cleanly - all five additions right and none of the subtractions is a different week of teaching from a flat five of ten.

WHAT IS INCLUDED - 14 pages, 6 probe forms, 301 type-in fields

The Goal Page

• What the probe measures, in one paragraph
• A sample goal, invented, with every bracket meant to be edited by the team
• The six-part goal frame as type-in fields: by (date), given, student will, criterion, on ___ of ___ consecutive probes, as measured by
• A baseline table: three probes and the median
• Three benchmark rows with target date, target score, actual score and met
• The administration and scoring directions
• Lines for this student's own scoring rules, and a box for what the errors say to reteach

Six Probe Forms, A Through F

• Five additions with two addends between 2 and 9 whose sum is above ten, and five subtractions with minuends from 11 to 20 whose difference drops below ten, mixed at random and printed large in a card grid
• No problem repeats within a form. The forms are drawn independently, so a fact can recur across the set: on a fact probe that is the point, because the facts themselves are the fixed set being learned
• Untimed, and the goal page says so, so the condition stays the same all year and the score is the skill rather than the speed
• Every form carries the goal it measures: the sample goal, plus a type-in box for the goal as written for this student, so the goal prints on the sheet the person giving the probe is holding
• A teacher scoring strip, 1 to 10, and a Correct ___ / 10 box at the foot of every form
• Name, date and form letter at the top

The Data Log And Graph

• A y-axis already scaled 0 to 10, twelve probe columns, and the instruction to draw the aim line from the baseline to the criterion first
• A twelve-row log: date, form, correct, errors, the score used on the graph, and notes

The Caseload Summary

• Twelve student rows, baseline and criterion, eight probe columns, a trend column and a decision column
• For the data meeting: rows that are flat together are a group, a row that is flat alone is a different question

A Worked Example

• An invented second grader, twelve weekly probes: the baseline taken as a median, the aim line, three points under it forcing a teaching change (subtraction by making ten) after the notes showed all five additions right and none of the subtractions, the criterion met, and the progress-report sentence the log produces. Every number in that sentence is on the log.

What This Is, And What It Is Not

It is a fillable PDF. The goal page, the goal box on every probe form, the data log and the caseload page are type-in fields: open the file in a PDF reader, click a line or a cell, type, and Save As once per student. The probe forms are meant to be printed: one copy per student per week, the student writes the answers on the form, and that same sheet is the one you score. It works offline with no account or subscription. It does not calculate percents or draw the graph.

It is not a norm-referenced assessment and it carries no benchmark score or "typical" rate. The criteria in the sample goal are in brackets because your team sets them from the baseline and the student's IEP. Every probe is untimed on purpose; the goal page says so, so the condition stays the same all year.

Who This Is For

Special education teachers and case managers writing math goals for any age student, first and second grade intervention teachers, and the paraprofessionals who give the weekly probe.

If You Want More Skills

This is mixed addition and subtraction within 20 on its own. Addition Within 10 and Subtraction Within 10 are the two skills before it. The twelve-skill pack, IEP Goals and Progress Monitoring Probes, carries all six math skills and six reading skills in one 69-page file.