Ex-PBB housemate and current GirlTrend Karen Reyes and Joshua Reyes of Gimme 5 take turns in leading two groups of cum laude students from Philippine Normal University and Jose Rizal University this Sunday (April 17) in another challenge episode of “Matanglawin.”

General knowledge takes center stage as Kuya Kim Atienza grills Karen and Joshua’s respective teams to find out who will be the Siyen-Saya King and Queen. Not only that, the contestants also have to undertake a special “Matanglawin” Ice Bucket challenge if they get five correct answers in the Question and Answer portion. “Matanglawin,” now on its 8th year, aims to educate kids and adults alike and explore the wonders of nature, technology, and general science as Kuya Kim explores every nook and cranny that he can reach for the sake of knowledge. Tune in to “Matanglawin” this Sunday (April 17), 10:30 am on ABS-CBN or ABS-CBN HD (SkyCable ch 167). Catch up via iwantv.com.ph or skyondemand.com.ph for Sky subscribers. Follow their Facebook page at http://facebook.com/MatanglawinTV and official Twitter account (@MatanglawinTV) for more updates.