Nonogram Picture Logic, 15 by 15 Challenge

Start with a logic grid such as Logic Grid, Four Fair Booth Shifts, then move to puzzles with number clues. Have students mark X and dots in pencil and check each clue once the table is full.

Use row and column group lengths to shade a large 15 by 15 grid, checking rows against columns. The directions on the page read: Use the numbers beside each row and above each column to shade the correct squares. Numbers give the length of each group of shaded squares, in order, with at least one blank square between groups. Check rows against columns as you go. An answer key is included.

Yes, both. We made it for 7th grade math puzzles, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.

Read every clue and mark X in the grid where a pairing cannot be true. Mark a dot or circle where it must be true. Repeat until each person has one match, then copy the matches into the table.

The clues use integers, percents of $400, ratios of ages, fractions of an hour and fractions of page counts. One sheet uses a Venn diagram of survey counts and another uses equations for balanced scales.

A nonogram is a picture puzzle with number clues beside each row and above each column. The numbers give the length of each group of shaded squares in order. The 10 by 10 sheet includes a finished small example to study first.

Yes. All 16 sheets have an answer key that shows the solved grid and table.