One More or One Less Task Box

About this resource

EVERYTHING INSIDE — 22 pages, 150 type-in fields (verified: pypdf field count on the shipped PDF)

• 18 one-more/one-less cards across 3 levels (9 “one more” cards, 9 “one less” cards), every card one plain CSS numeral tile, its fixed direction printed on the card, and a row of numeral choice tiles the child marks
• Every card twice: accent-colored tiles for a laminated classroom box and black-on-white ink-saver tiles for the photocopier — plain printed numerals, no picture library either way
• A number-line reference page (color and ink-saver): eight anchor numbers, each shown with its own one-less and one-more neighbor
• An answer key listing every card by level, with its starting numeral, its fixed direction and its choices, the answer marked in bold
• A task box data sheet (16 rows: date, level, cards used, cards correct, cards given, percent, help given, initials)
• A percent graph, 14 sessions across, with a level box under each session
• A filled example — an invented student, 8 sessions, every percent re-counted from its own row
• A family practice page with six of the same cards
• A phrase bank: spoken lines for running the box and written starters for the note afterward, in 6 groups
• Start Here, a contents page with page thumbnails, and a "what's next" back page

Three Levels, Ramped By The Distractor, Not The Direction

Every level mixes "one more" and "one less" cards roughly evenly, so a student can never answer by always adding — the instruction printed on the card is the only thing that says which way to go. Because the step is one, every wrong choice is simply a NEIGHBOR of the starting numeral on the number line, not a same-ones-digit jump the way a tens box's choices are.

• Level 1 — 6 cards, 2 choices. The wrong choice is that same starting numeral's answer going the OTHER direction — two away from the true answer, not twenty, since +1 and -1 from one starting numeral sit right next to each other.
• Level 2 — 6 cards, 3 choices. The starting numeral printed again as a "no change" near miss (what a child writes when the instruction is heard but nothing is actually counted), plus the same wrong-direction choice. The three choices are always three consecutive numbers.
• Level 3 — 6 cards, 4 choices. The no-change near miss AND an "overshoot" near miss (one step too far in the correct direction) live on the card at once, plus the wrong-direction choice — the hardest discrimination in the box. The four choices are always four consecutive numbers.

Nothing on a card says its level except a dot code in the corner (one, two or three dots), so a mixed-up box sorts itself back together.

NO PICTURES, ON PURPOSE — every numeral on every page is plain printed text, drawn the same way in both the color set and the ink-saver set. There is no picture library to run out of and no image to misread; the only thing a child reads is a number and a direction.

What This Is, And What It Is Not

It is a fillable PDF: type into the data sheet, the graph header, the family page and the example-style notes, or print and use a pen. The card pages and number-line reference print on cardstock or plain paper and cut along dashed lines. It works offline with no account or subscription. It is NOT an editable online slideshow or word-processor document, and it is not a test of anything.

It carries no prompt hierarchy, fading schedule or mastery rule, and it does not decide what a percent means for a student or when to move up a level. The goal line and the criterion field are blanks for your district's own wording and your team's own number. It measures one thing: cards with the one-more-or-one-less tile correctly marked.

Who This Is For

Special education teachers and paraprofessionals running independent work stations or task box rotations with students working on number sense, case managers who need that practice to show up as data, and the families who get the practice page sent home.

More In The Collection

This is one set in the Task Box Collection; more sort, counting and sequencing boxes are being added to the collection regularly, all on the same cards-plus-data shape.