Sometimes the key to recognition is repetition. If you have students who struggle with letter recognition these hidden image letter K worksheets are great to practice the letter K.
Give your students a blue, pink, red and yellow crayon and have them color in all the boxes in the 7 x 7 grid. This set of worksheets focuses entirely on the letter K, with kids having to identify the upper case letters and lower case letters and color them according to the color key. As they do a hidden letter will appear in the grid.