だいか さん。。。 (Lesson 3...)

I'm finding だいか　さん　to be much harder than に　or いち。　It's just that when I was learning words like ほん、　えんぴつ、　ばるぺん、　のうと、 etc.., I could just point to stuff in my room to help me learn. Unfortunately, I'm fresh out of 　ふじんふく　and 　おもちゃ、　so it's taking a bit longer to memorize the new words...