Error Assist Arrow$2.00 Acetate see-through arrow. The arrow allows the teacher to draw attention to mouth movements when additional sensory information is required to help students learn to segment or to blend. Quantity Error Assist Arrow quantity Add to cart SKU: Item #43 Category: Manuals & Booklets Related products Add to cart Intermediate Kit $320.00 Add to cart Intermediate Grade Small Group Folder- No longer available. $6.50 Add to cart Kindergarten Reinforcement Reader Book Set $8.00 Add to cart First Grade Sentence Strips Booklet $15.00