thank you for responding to the call of the Holy Spirit to share your faith with children and youth of your parish. God bless you.
Make use of your catechist guide. it is full of things like, characteristics of 2nd graders, suggested activities to enrich the lesson, additional resources books, songs, videos etc. it may come with a video from the publisher telling you how to use it.
prepare lesson plans, for each unit if not for each chapter. use the suggested syllabus guide from your parish. your catechist manual has a sample lesson plan if your DRE does not provide one.
plan to spend at least 1/2 hour planning for every hour of teaching (more for older grades)
it this year preparing for sacraments? if so are you responsible for the sacramental program (usually another book) or the basic textbook? who handles parent meetings?
when planning lessons if you only have 15 minutes, read the scripture suggested for the lesson and meditate on it. if you only have 30 minutes, read the scripture, and the catechist citations for the lesson. Pray and meditate with them. after you have done that, begin to plan how you will introduce, develop, wrap up, and review each lesson.
get to class early and have the materials and supplies you will need on hand. don’t scurry around looking for crayons, scissors etc. after class begins.
the purpose of all arts & crafts, songs, videos, drama, movement and other activities is to reinforce the lesson and the concepts, and they should be chosen for that goal, not as busywork or time fillers. if you do choose any of these, try them out first, don’t use your students as guinea pigs (you already know this from GS or brownies). If you, or the parent, does the activity for the child, they are not learning.
Teach one or two basic concepts each lesson, don’t get too complicated.
the textbook is a guide, not a bible.
have the children come up with classroom rules together, write them in positive mode on a poster, keep them simple, enforce them.