Grade 5: Review pages 6+7 where the letters BET and TAV are. Then move on to page 8 and try the letter SHIN. Remember that the vowels are the same and not changing.
Grade 3: Hebrew practice is on page 8 SHIN. Read through this 5 minutes a day four time a week to stay fresh.
Grade 4: Review and practice pares 5 + 6 the letter TAV. Remember there are two letter TAVs that make the same sound- no change.
Grades 6/7: Review and practice the SHIN on pages 6/7. Then move on to pages 12/13 where you will see the letter MEM.
Remember: Hebrew is learned with ease by the frequency of practice and more than the amount of time put into it. It is better to read and practice for 5 minutes a day for 3 days rather than 20 minutes non-stop once before Hebrew school. Beds and bedroom lamps are a Hebrew Teacher's best friend :)