1.   As he came in, I made a mental note of where he put the keys.

2.   Child circled the classroom, making mental notes of good or negative parenting behavior he would discuss with the adults later.

3.   He made a mental note of the byline above the Globe articles, Frank Dougherty, then sifted through the newspaper photographs.

4.   He made a mental note of the number of coaches and freight cars.

5.   He made a mental note to arrange a time to meet her.

6.   He made a mental note to buy another chair.

7.   He made a mental note to call her and arrange a time to meet, away from her parents.

8.   I let the remark pass, but made a mental note for myself.

9.   I let the subject pass and made a mental note for myself.