Watch Genius Junior

Three teams head for the finals. Ashley, Rodrigo and Shivani of "The Dork Side" will face Treasure, Sebastian and Apoorva of "The Fast and the Curious," along with Michi, Jackson and Ugochi of "Geeks on Fleek." In the Human GPS round, finalists memorize the constellations. One team is eliminated and two will face off for Extreme Number Cruncher and then a complex Talking Dictionary. Ultimately, the teams take on the toughest Cortex ever.

In the third semi-finals show, Anna, Vivek and Summer of "27 Yards" go up against Treasure, Sebastian and Apoorva of "The Fast and The Curious." Contestants must memorize the various sections of the Titanic for the Human GPS round, before taking on Number Cruncher, Talking Dictionary and Memory Master. Apoorva is the "Super Brain" for her team on the Number Cruncher while Vivek is the "Super Brain" for Talking Dictionary.

The kids of Geeks on Fleek and 99 Problems but Brains Ain't One compete in four rounds - Human GPS, Number Cruncher, Talking Dictionary and Memory Master - in hopes of moving on to The Cortex and the finals, where a big cash prize is at stake.

The kids of the Brainy Bunch and the Dork Side compete in four rounds - Human GPS, Number Cruncher, Talking Dictionary and Memory Master - in hopes of moving on to The Cortex and the finals, where a big cash prize is at stake.

Anna, Vivek and Summer from "27 Yards" take on Nolan, Eashani and Jack from "Wicked Smaht." In the Human GPS round, contestants memorize the complex array of galleries included in the Smithsonian collection, before moving on to Number Cruncher and Talking Dictionary. The winning team moves on to "The Cortex," an overall test of intelligence.

Nile, Reagan and Akshansh of "Legen Wait For It dary" take on Treasure, Sebastian and Apoorva of "The Fast and the Curious." For the Human GPS round, contestants memorize Greyhound bus routes across the United States, before moving onto Number Cruncher, where Akshansh plays as the Super Brain for his team, while Apoorva plays as the Super Brain for her team. The teams then take on Talking Dictionary then ultimately, "The Cortex."

Vinay, Lillian and Bryan of "The FOGS" go up against "Michi, Jackson and Ugochi of "Geeks on Fleek." Contestants memorize the intricacies of the San Francisco streets for the Human GPS round. The FOGS nominate Vinay as their "super brain" to handle the Number Cruncher round. Then, the teams take on Talking Dictionary and ultimately, "The Cortex," the final test of all-around smarts.

99 Problems but Brains Ain't One and the Cheese Cabinet compete in four rounds - Human GPS, Number Cruncher, Talking Dictionary and Memory Master - in hopes of moving on to The Cortex and, eventually, the finals, where a big cash prize is at stake.

The kids of the Brainy Bunch and the Superlatives compete in four rounds - Human GPS, Number Cruncher, Talking Dictionary and Memory Master - in hopes of moving on to The Cortex and, eventually, the finals, where a big cash prize is at stake.

Rodrigo, Ashley and Shivani of "The Dork Side" go up against Sebastian, Michelle and Aiden of "Team on a Roll."