I know that this tecniques + games have paid off in my children.I just look at my kids who still not really challenged in high school honor/ AP courses.Next year, they will both attending local college for high school credits.
Inside this book are 50 Treasure Hunts for beginning readers. They start off very easy and become more difficult. Each hunt has several clues and can be easily done inside the house. My kids loved doing the hunts and as they got older they loved setting them up for their younger siblings. There are stickers in the back of the book to give as prizes but we always supplied them with more interesting stickers or prizes (popsicles, bubbles, trips, fancy stickers, coloring pages, crayons or another treasure hunt).