After superlatives, we normally use two prepositions of and in
♥ we use in with a singular word referring to a place or group
I am the happiest woman in the world
Mary is the fastest player in the team
♥we use of before plurals, before time periods such as year/month
She’s the fastest tennis player of them all
Saturday is the best day of the week
Test your knowledge
Very often I have been asked this question in class. What’s the difference between Farther /ˈfɑː.ðər/ and Further /ˈfɜː.ðər/ and between Older /əʊldə/ and Elder/ˈel.dər/?
♥ Farther /Further
– Distance: both farther and further are used to talk about physical distance . There is no difference between them.
Ex : Leon is further /farther away than Oviedo
– Additional: Further is used when we want to mean ” additional” ” extra” “more advanced”.
Ex : For further information, see page 153.
♥Older/Elder
We use Elder when we want to talk about the order of birth of the members of a family . They are only used before nouns, ie, in attributive position
Compare:
My elder /older daughter has just found her first job
My sister is two years older than me
My eldest /oldest daughter has just found a job
Peter is the oldest student in his classroom
Now, fancy doing some practice?
I wanted to say Happy Tuesday but this weather is really getting me down in the dumps.
You might not believe it but it has been raining nonstop for more than two months now and I feel I need some sun to cheer me up. Added to this is the fact that I’ve been working mornings, afternoons, evenings and also two weekends in a row. Only today, I am quickly writing this post to leave again to go to work .
Anyways, these are two activities I’m planning to use with my Elementary students to practise Comparatives and Superlatives. I found them via BusyTeachers and they are just what I need right now: highly motivating activities which require no preparation . Thank you so much for sharing,Susan. (see her profile here).
Look Around You Race
Students in groups of four compare students in the classroom. Set a time limit of about 5 minutes and on your signal each group of students should write as many comparative and 
superlative sentences as they can about the people in their classroom. At the end of the time period, have one group share their sentences. If another group has the same sentence as the first group, both groups should cross that statement off their list. Continue until all groups have read all of their statements and any duplicates are eliminated. The group with the most statements remaining wins.
These Are the People in Your Family
Students are given about 10 adjectives that can be used to describe people: hard-working, tall, young, old, funny, intelligent, tall, fat, happy, pretty… Then challenge them to write a sentence using the superlative form of each adjective about a person in their family. 
Once the sentences are completed, each person should write a list of the family members who appeared in their sentences. Students in pairs exchange the lists of people but keep their sentences to themselves. Each person should ask questions about their partner’s family and try to match each person to their superlative adjective. For example, a person might ask, “Is Lucas the oldest person in your family?” The other person should answer with a yes or an explanation. “No, Lucas is only four years old.” Give students time enough to ask each other questions, and then see who in your class figured out the most family member qualities!
There is something I have to tell you. When I am alone in my car
I sing at the top of my voice and I enjoy it so much that sometimes I even dance while driving! But it even gets worse because while I am listening to music, very often, I focus on the grammar or the lyrics and if I am teaching something specific and I feel like my students need a break, then I make a point of not giving up till I find the right song. So much for concentration on the road!
This happened last week with my first and second years. I decided they needed a break from some boring stuff we had been dealing with. We were about to learn Antonyms and then, all of a sudden, Katy Perry was on the radio singing her world famous Hot n Cold. Great for opposites in elementary levels!
I was planning on grabbing the lyrics from Internet and racking my brains to create some good tasks when I decided to try ISL Collective and there it was. Ready to take! Thank you very much Missk for your wonderful job. It was a real timesaver!
(to download this activity you’ll need to register on this site : ISL COLLECTIVE (I talked about this page here).
Now, why don’t you try this activity? It’s a lot of fun.