My grandson pulled the beached whale game with me. After having 4 children of my own, I knew he was frustrated about it. I went to walmart toy section and bought an 88 cent ball. About 8 inches diameter. I sat with him for about a half hour for 2 days in a row, and we played with it, bounce, pushed and lifted himself with it,(making sure he grasped and pulled to lift himself). Now, one week later, he is crawling for that ball, which when pushed, rolls against any object and heads a different direction or back to him. He pushes himself up with it, and also hits it back and chases it. A little time invested with them in that position payed off for me. (Make sure its bright and attractive)I think it created a desire and motivation. Children need that to develope. He is no longer beached, and I'm not sure that was so great, now when I leave him to do a chore, I find him anywhere! (haha) He is 7 and a half months, now mobile and too quiet! Children do develope at thier own speed. My niece was 16 months before she ever tried to move from sitting position. Sometimes that is moms fault for being Johnnie on the spot every time they get frustrated. Create desires, it doesnt' take a lot of flashing lights and money, just a bit of time in the area you are both frustrated with. (I put all of his toys away when we played ball, so there were no other distractions.) Good Luck!